Alert and warning message protection in msim

ABSTRACT

An apparatus for wireless communication is provided. The apparatus is configured to obtain, based on a first mobile alert associated with a first subscriber identity module (SIM) being scheduled for broadcast from a first network, an indication of receiver resources assigned for receiving the first mobile alert associated with the first SIM. The apparatus is further configured to refrain, based at least in part on the indication, from receiving a second mobile alert associated with a second SIM scheduled for broadcast from a second network. The first mobile alert and the second mobile alert may be associated with messages from at least one of a CMAS or an ETWS.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of U.S. Provisional Application Ser.No. 63/030,814, entitled “ALERT AND WARNING MESSAGE PROTECTION IN MSIM”and filed on May 27, 2020, the disclosure of which is expresslyincorporated by reference herein in its entirety.

BACKGROUND Technical Field

The present disclosure relates generally to communication systems, andmore particularly, to alert/warning message protection in multisubscriber identity (or identification) module (SIM) (MSIM).

Introduction

Wireless communication systems are widely deployed to provide varioustelecommunication services such as telephony, video, data, messaging,and broadcasts. Typical wireless communication systems may employmultiple-access technologies capable of supporting communication withmultiple users by sharing available system resources. Examples of suchmultiple-access technologies include code division multiple access(CDMA) systems, time division multiple access (TDMA) systems, frequencydivision multiple access (FDMA) systems, orthogonal frequency divisionmultiple access (OFDMA) systems, single-carrier frequency divisionmultiple access (SC-FDMA) systems, and time division synchronous codedivision multiple access (TD-SCDMA) systems.

These multiple access technologies have been adopted in varioustelecommunication standards to provide a common protocol that enablesdifferent wireless devices to communicate on a municipal, national,regional, and even global level. An example telecommunication standardis 5G New Radio (NR). 5G NR is part of a continuous mobile broadbandevolution promulgated by Third Generation Partnership Project (3GPP) tomeet new requirements associated with latency, reliability, security,scalability (e.g., with Internet of Things (IoT)), and otherrequirements. 5G NR includes services associated with enhanced mobilebroadband (eMBB), massive machine type communications (mMTC), andultra-reliable low latency communications (URLLC). Some aspects of 5G NRmay be based on the 4G Long Term Evolution (LTE) standard. There existsa need for further improvements in 5G NR technology. These improvementsmay also be applicable to other multi-access technologies and thetelecommunication standards that employ these technologies.

SUMMARY

The following presents a simplified summary of one or more aspects inorder to provide a basic understanding of such aspects. This summary isnot an extensive overview of all contemplated aspects, and is intendedto neither identify key or critical elements of all aspects nordelineate the scope of any or all aspects. Its sole purpose is topresent some concepts of one or more aspects in a simplified form as aprelude to the more detailed description that is presented later.

A UE that utilizes a single receiver for receiving alert/warningmessages from a plurality of SIMS may lose some or all of thealert/warning messages in some circumstances. Accordingly, there is aneed for alert/warning message protection in MSIM. Differentconfigurations/approaches are provided infra, including a first-come,first-served (FCFS) approach, an application processor (AP) triggerapproach, a message stitching approach, and a single SIM (SSIM)approach.

In an aspect of the disclosure, a method, a computer-readable medium,and an apparatus are provided. The apparatus may be a UE, andspecifically a cellular baseband processor/modem of the UE. Theapparatus is configured to obtain, based on a first mobile alertassociated with a first subscriber identity module (SIM) being scheduledfor broadcast from a first network, an indication of receiver resourcesassigned for receiving the first mobile alert associated with the firstSIM. The apparatus is further configured to refrain, based at least inpart on the indication, from receiving a second mobile alert associatedwith a second SIM scheduled for broadcast from a second network.

In one configuration, to obtain the indication of the receiver resourcesbeing assigned for receiving the first mobile alert associated with thefirst SIM, the apparatus is configured to lock a transceiver resourcemanagement (TRM) module from requesting the receiver resources forreceiving mobile alerts associated with other SIMS other than the firstSIM.

In one configuration, the first mobile alert and the second mobile alertare associated with messages from at least one of a commercial mobilealert system (CMAS) or an earthquake and tsunami warning system (ETWS).

In one configuration, the apparatus is further configured to obtain,upon completion of the receiving the first mobile alert, a secondindication that the receiver resources are unassigned for receivingmobile alerts associated with the first SIM.

In one configuration, to obtain the second indication of the receiverresources being unassigned for receiving the first mobile alertassociated with the first SIM, the apparatus is configured to unlock aTRM module from being unable to request the receiver resources forreceiving mobile alerts associated with other SIMS other than the firstSIM.

In one configuration, the apparatus is further configured to determinethat a third mobile alert associated with the second SIM is scheduledfor broadcast from the second network, and to increase, based at leastin part on the second indication, a priority of securing the receiverresources for receiving the third mobile alert. In addition, theapparatus is configured to obtain, based on the increased priority forsecuring the receiver resources for receiving the third mobile alert, athird indication of the receiver resources being assigned for receivingthe third mobile alert associated with the second SIM. Further, theapparatus is configured to receive the third mobile alert through thereceiver resources.

In one configuration, the apparatus is further configured to receive atrigger for increasing the priority from an AP. The priority may beincreased based on the received trigger.

In one configuration, the apparatus is further configured to determinethat a third mobile alert associated with the first SIM is scheduled forbroadcast from the first network, and to obtain, based on thedetermination that the third mobile alert is scheduled for broadcast, athird indication that the receiver resources are assigned for receivingthe third mobile alert associated with the first SIM.

In one configuration, the apparatus is further configured to determiningthat the third mobile alert and the first mobile alert have a samemessage identifier (ID), to stop a reception of the third mobile alertbased on the determination that the third mobile alert and the firstmobile alert have the same message ID, and to obtain a fourth indicationthat the receiver resources are unassigned for receiving the thirdmobile alert associated with the first SIM.

In one configuration, the apparatus is further configured to send thefirst mobile alert to an AP for signaling the first mobile alert to auser of the UE.

In one configuration, the apparatus is further configured to determinethat the first mobile alert associated with the first SIM is scheduledfor broadcast from the first network.

In one configuration, the apparatus is further configured to determinethat the second mobile alert associated with the second SIM is scheduledfor broadcast from the second network.

In an aspect of the disclosure, a method, a computer-readable medium,and an apparatus are provided. The apparatus may be a UE, andspecifically an application processor of the UE. The apparatus isconfigured to receive a mobile alert from a first SIM, and to send atrigger to a second SIM to increase a priority for obtaining receiverresources for receiving mobile alerts associated with the second SIM.

In an aspect of the disclosure, a method, a computer-readable medium,and an apparatus are provided. The apparatus may be a UE, andspecifically a cellular baseband processor/modem of the UE. Theapparatus in association with the first SIM is configured to receive oneor more message segments associated with a mobile alert. The apparatusin association with the first SIM is configured to decode the one ormore message segments associated with the mobile alert. The apparatus inassociation with the first SIM is configured to transmit, based on theone or more decoded message segments, a decoded message to the apparatusin association with a second SIM.

In one configuration, the apparatus in association with the first SIM isconfigured to transmit the decoded message to an application processor(AP) for signaling the mobile alert to a user of the apparatus.

In one configuration, the apparatus in association with the first SIM isconfigured to transmit a set of message identifiers associated with oneor more decoded message segments to the apparatus in association withthe second SIM.

In one configuration, the apparatus in association with the second SIMis configured to transmit, based on the received set of messageidentifiers, the decoded message to the AP for signaling the mobilealert to a user of the apparatus.

In one configuration, the apparatus in association with the second SIM,when transmitting the decoded message to the AP, is configured todetermine whether the received set of message identifiers is associatedwith second SIM, and in response to determining that the received set ofmessage identifiers is associated with the second SIM, that apparatus inassociation with the second SIM is configured to transmit the decodedmessage to the AP.

In one configuration, the apparatus operates in a page sharing mode. Inone configuration, the apparatus in association with the first SIM isconfigured to obtain, based on determination that the mobile alerts isscheduled for broadcast, an indication of receiver resources assignedfor receiving the one or more mobile alerts.

In one configuration, the mobile alert is associated with messages fromat least one of a commercial mobile alert system (CMAS) or an earthquakeand tsunami warning system. In one configuration, the one or moremessage segments are associated with one or more messages from at leastone of a CMAS or an ETWS.

In one configuration, the apparatus is configured to determine that themobile alert associated with at least the first SIM and/or the secondSIM is scheduled for broadcast from the network. In one configuration,the mobile alert is associated with at least the first SIM and thesecond SIM.

In an aspect of the disclosure, a method, a computer-readable medium,and an apparatus are provided. The apparatus may be a UE, andspecifically a cellular baseband processor/modem of the UE. Theapparatus is configured to receive at least a first portion of a firstmobile alert associated with a first SIM. The first mobile alert isreceived from a first network. The apparatus is further configured toreceive at least a second portion of a second mobile alert associatedwith a second SIM. The second mobile alert is received from a secondnetwork. The apparatus is further configured to determine that a firstidentifier of the first mobile alert and a second identifier of thesecond mobile alert are the same. The apparatus is further configured tocombine, based on at least in part on the determination that the firstidentifier of the first mobile alert and the second identifier of thesecond mobile alert are the same, the at least the first portion of thefirst mobile alert and the at least the second portion of the secondmobile alert.

In one configuration, the apparatus is further configured to stop thereceiving of the first mobile alert before the first mobile alert isreceived completely in order to receive the second mobile alert.

In one configuration, the apparatus is further configured to determine,while receiving the at least the first portion of the first mobilealert, that the second mobile alert associated with the second SIM isscheduled for broadcast. In addition, the apparatus is furtherconfigured to set a priority of receiving the second mobile alert to apriority higher than a priority for receiving the first mobile alert. Insuch a configuration, the apparatus is configured to stop receiving thefirst mobile alert based on the second mobile alert having a higherpriority than the first mobile alert.

In one configuration, the apparatus is further configured to send thefirst mobile alert to an AP for signaling the first mobile alert to auser of the UE.

In an aspect of the disclosure, a method, a computer-readable medium,and an apparatus are provided. The apparatus may be a UE, andspecifically an application processor of the UE. The apparatus isconfigured to determine that a first mobile alert associated with afirst non-default SIM is scheduled for broadcast from a first NRnetwork, to determine whether a second default SIM associated with asecond NR network is in service or out of service, and to receive thefirst mobile alert associated with the first non-default SIM based atleast in part on the determination that the second default SIM is out ofservice.

In one configuration, the apparatus is further configured to refrainfrom receiving the first mobile alert associated with the firstnon-default SIM based at least in part on the determination that thesecond default SIM is in service.

In one configuration, the apparatus is further configured to determine,while receiving the first mobile alert, that the second default SIM isin service. In addition, the apparatus is configured to complete thereceiving of the first mobile alert. Further, the apparatus isconfigured to monitor for additional mobile alerts associated with thesecond default SIM upon completion of the receiving of the first mobilealert.

In one configuration, the apparatus is further configured to send thefirst mobile alert to an AP for signaling the first mobile alert to auser of the UE.

To the accomplishment of the foregoing and related ends, the one or moreaspects comprise the features hereinafter fully described andparticularly pointed out in the claims. The following description andthe annexed drawings set forth in detail certain illustrative featuresof the one or more aspects. These features are indicative, however, ofbut a few of the various ways in which the principles of various aspectsmay be employed, and this description is intended to include all suchaspects and their equivalents.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram illustrating an example of a wireless communicationssystem and an access network.

FIGS. 2A, 2B, 2C, and 2D are diagrams illustrating examples of a first5G NR frame, DL channels within a 5G NR subframe, a second 5G NR frame,and UL channels within a 5G NR subframe, respectively.

FIG. 3 is a diagram illustrating an example of a base station and userequipment (UE) in an access network.

FIG. 4 is a first timing diagram illustrating alert/warning messageprotection in MSIM using an FCFS approach.

FIG. 5 is a second timing diagram illustrating alert/warning messageprotection in MSIM using an FCFS approach while the UE is operating inpage sharing mode.

FIG. 6 is a third timing diagram illustrating alert/warning messageprotection in MSIM using an AP trigger approach.

FIG. 7 is a fourth timing diagram illustrating alert/warning messageprotection in MSIM using a message stitching approach.

FIG. 8 is a fifth timing diagram illustrating alert/warning messageprotection in MSIM using an SSIM approach.

FIG. 9 is a first flowchart of a first method of wireless communication.

FIG. 10 is a second flowchart of the first method of wirelesscommunication.

FIG. 11 is a third flowchart of the first method of wirelesscommunication.

FIG. 12 is a flowchart of the second method of wireless communication.

FIG. 13 is a flowchart of a third method of wireless communication.

FIG. 14 is a flowchart of a fourth method of wireless communication.

FIG. 15 is a flowchart of a fifth method of wireless communication.

FIG. 16 is a diagram illustrating an example of a hardwareimplementation for an example apparatus.

DETAILED DESCRIPTION

The detailed description set forth below in connection with the appendeddrawings is intended as a description of various configurations and isnot intended to represent the only configurations in which the conceptsdescribed herein may be practiced. The detailed description includesspecific details for the purpose of providing a thorough understandingof various concepts. However, it will be apparent to those skilled inthe art that these concepts may be practiced without these specificdetails. In some instances, well known structures and components areshown in block diagram form in order to avoid obscuring such concepts.

Several aspects of telecommunication systems will now be presented withreference to various apparatus and methods. These apparatus and methodswill be described in the following detailed description and illustratedin the accompanying drawings by various blocks, components, circuits,processes, algorithms, etc. (collectively referred to as “elements”).These elements may be implemented using electronic hardware, computersoftware, or any combination thereof. Whether such elements areimplemented as hardware or software depends upon the particularapplication and design constraints imposed on the overall system.

By way of example, an element, or any portion of an element, or anycombination of elements may be implemented as a “processing system” thatincludes one or more processors. Examples of processors includemicroprocessors, microcontrollers, graphics processing units (GPUs),central processing units (CPUs), application processors, digital signalprocessors (DSPs), reduced instruction set computing (RISC) processors,systems on a chip (SoC), baseband processors, field programmable gatearrays (FPGAs), programmable logic devices (PLDs), state machines, gatedlogic, discrete hardware circuits, and other suitable hardwareconfigured to perform the various functionality described throughoutthis disclosure. One or more processors in the processing system mayexecute software. Software shall be construed broadly to meaninstructions, instruction sets, code, code segments, program code,programs, subprograms, software components, applications, softwareapplications, software packages, routines, subroutines, objects,executables, threads of execution, procedures, functions, etc., whetherreferred to as software, firmware, middleware, microcode, hardwaredescription language, or otherwise.

Accordingly, in one or more example embodiments, the functions describedmay be implemented in hardware, software, or any combination thereof. Ifimplemented in software, the functions may be stored on or encoded asone or more instructions or code on a computer-readable medium.Computer-readable media includes computer storage media. Storage mediamay be any available media that can be accessed by a computer. By way ofexample, and not limitation, such computer-readable media can comprise arandom-access memory (RAM), a read-only memory (ROM), an electricallyerasable programmable ROM (EEPROM), optical disk storage, magnetic diskstorage, other magnetic storage devices, combinations of theaforementioned types of computer-readable media, or any other mediumthat can be used to store computer executable code in the form ofinstructions or data structures that can be accessed by a computer.

FIG. 1 is a diagram illustrating an example of a wireless communicationssystem and an access network 100. The wireless communications system(also referred to as a wireless wide area network (WWAN)) includes basestations 102, UEs 104, an Evolved Packet Core (EPC) 160, and anothercore network 190 (e.g., a 5G Core (5GC)). The base stations 102 mayinclude macrocells (high power cellular base station) and/or small cells(low power cellular base station). The macrocells include base stations.The small cells include femtocells, picocells, and microcells.

The base stations 102 configured for 4G LTE (collectively referred to asEvolved Universal Mobile Telecommunications System (UMTS) TerrestrialRadio Access Network (E-UTRAN)) may interface with the EPC 160 throughfirst backhaul links 132 (e.g., S1 interface). The base stations 102configured for 5G NR (collectively referred to as Next Generation RAN(NG-RAN)) may interface with core network 190 through second backhaullinks 184. In addition to other functions, the base stations 102 mayperform one or more of the following functions: transfer of user data,radio channel ciphering and deciphering, integrity protection, headercompression, mobility control functions (e.g., handover, dualconnectivity), inter-cell interference coordination, connection setupand release, load balancing, distribution for non-access stratum (NAS)messages, NAS node selection, synchronization, radio access network(RAN) sharing, multimedia broadcast multicast service (MBMS), subscriberand equipment trace, RAN information management (RIM), paging,positioning, and delivery of warning messages. The base stations 102 maycommunicate directly or indirectly (e.g., through the EPC 160 or corenetwork 190) with each other over third backhaul links 134 (e.g., X2interface). The first backhaul links 132, the second backhaul links 184,and the third backhaul links 134 may be wired or wireless.

The base stations 102 may wirelessly communicate with the UEs 104. Eachof the base stations 102 may provide communication coverage for arespective geographic coverage area 110. There may be overlappinggeographic coverage areas 110. For example, the small cell 102′ may havea coverage area 110′ that overlaps the coverage area 110 of one or moremacro base stations 102. A network that includes both small cell andmacrocells may be known as a heterogeneous network. A heterogeneousnetwork may also include Home Evolved Node Bs (eNBs) (HeNBs), which mayprovide service to a restricted group known as a closed subscriber group(CSG). The communication links 120 between the base stations 102 and theUEs 104 may include uplink (UL) (also referred to as reverse link)transmissions from a UE 104 to a base station 102 and/or downlink (DL)(also referred to as forward link) transmissions from a base station 102to a UE 104. The communication links 120 may use multiple-input andmultiple-output (MIMO) antenna technology, including spatialmultiplexing, beamforming, and/or transmit diversity. The communicationlinks may be through one or more carriers. The base stations 102/UEs 104may use spectrum up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz)bandwidth per carrier allocated in a carrier aggregation of up to atotal of Yx MHz (x component carriers) used for transmission in eachdirection. The carriers may or may not be adjacent to each other.Allocation of carriers may be asymmetric with respect to DL and UL(e.g., more or fewer carriers may be allocated for DL than for UL). Thecomponent carriers may include a primary component carrier and one ormore secondary component carriers. A primary component carrier may bereferred to as a primary cell (PCell) and a secondary component carriermay be referred to as a secondary cell (SCell).

Certain UEs 104 may communicate with each other using device-to-device(D2D) communication link 158. The D2D communication link 158 may use theDL/UL WWAN spectrum. The D2D communication link 158 may use one or moresidelink channels, such as a physical sidelink broadcast channel(PSBCH), a physical sidelink discovery channel (PSDCH), a physicalsidelink shared channel (PSSCH), and a physical sidelink control channel(PSCCH). D2D communication may be through a variety of wireless D2Dcommunications systems, such as for example, WiMedia, Bluetooth, ZigBee,Wi-Fi based on the Institute of Electrical and Electronics Engineers(IEEE) 802.11 standard, LTE, or NR.

The wireless communications system may further include a Wi-Fi accesspoint (AP) 150 in communication with Wi-Fi stations (STAs) 152 viacommunication links 154 in a 5 GHz unlicensed frequency spectrum. Whencommunicating in an unlicensed frequency spectrum, the STAs 152/AP 150may perform a clear channel assessment (CCA) prior to communicating inorder to determine whether the channel is available.

The small cell 102′ may operate in a licensed and/or an unlicensedfrequency spectrum. When operating in an unlicensed frequency spectrum,the small cell 102′ may employ NR and use the same 5 GHz unlicensedfrequency spectrum as used by the Wi-Fi AP 150. The small cell 102′,employing NR in an unlicensed frequency spectrum, may boost coverage toand/or increase capacity of the access network.

A base station 102, whether a small cell 102′ or a large cell (e.g.,macro base station), may include and/or be referred to as an eNB, gNodeB(gNB), or another type of base station. Some base stations, such as gNB180 may operate in a traditional sub 6 GHz spectrum, in millimeter wave(mmW) frequencies, and/or near mmW frequencies in communication with theUE 104. When the gNB 180 operates in mmW or near mmW frequencies, thegNB 180 may be referred to as an mmW base station. Extremely highfrequency (EHF) is part of the RF in the electromagnetic spectrum. EHFhas a range of 30 GHz to 300 GHz and a wavelength between 1 millimeterand 10 millimeters. Radio waves in the band may be referred to as amillimeter wave. Near mmW may extend down to a frequency of 3 GHz with awavelength of 100 millimeters. The super high frequency (SHF) bandextends between 3 GHz and 30 GHz, also referred to as centimeter wave.Frequency range bands include frequency range 1 (FR1), which includesfrequency bands below 7.225 GHz, and frequency range 2 (FR2), whichincludes frequency bands above 24.250 GHz. Communications using themmW/near mmW radio frequency (RF) band (e.g., 3 GHz-300 GHz) hasextremely high path loss and a short range. Base stations/UEs mayoperate within one or more frequency range bands. The mmW base station180 may utilize beamforming 182 with the UE 104 to compensate for theextremely high path loss and short range. The base station 180 and theUE 104 may each include a plurality of antennas, such as antennaelements, antenna panels, and/or antenna arrays to facilitate thebeamforming.

The base station 180 may transmit a beamformed signal to the UE 104 inone or more transmit directions 182′. The UE 104 may receive thebeamformed signal from the base station 180 in one or more receivedirections 182″. The UE 104 may also transmit a beamformed signal to thebase station 180 in one or more transmit directions. The base station180 may receive the beamformed signal from the UE 104 in one or morereceive directions. The base station 180/UE 104 may perform beamtraining to determine the best receive and transmit directions for eachof the base station 180/UE 104. The transmit and receive directions forthe base station 180 may or may not be the same. The transmit andreceive directions for the UE 104 may or may not be the same.

The EPC 160 may include a Mobility Management Entity (MME) 162, otherMMEs 164, a Serving Gateway 166, a Multimedia Broadcast MulticastService (MBMS) Gateway 168, a Broadcast Multicast Service Center (BM-SC)170, and a Packet Data Network (PDN) Gateway 172. The MME 162 may be incommunication with a Home Subscriber Server (HSS) 174. The MME 162 isthe control node that processes the signaling between the UEs 104 andthe EPC 160. Generally, the MME 162 provides bearer and connectionmanagement. All user Internet protocol (IP) packets are transferredthrough the Serving Gateway 166, which itself is connected to the PDNGateway 172. The PDN Gateway 172 provides UE IP address allocation aswell as other functions. The PDN Gateway 172 and the BM-SC 170 areconnected to the IP Services 176. The IP Services 176 may include theInternet, an intranet, an IP Multimedia Subsystem (IMS), a PS StreamingService, and/or other IP services. The BM-SC 170 may provide functionsfor MBMS user service provisioning and delivery. The BM-SC 170 may serveas an entry point for content provider MBMS transmission, may be used toauthorize and initiate MBMS Bearer Services within a public land mobilenetwork (PLMN), and may be used to schedule MBMS transmissions. The MBMSGateway 168 may be used to distribute MBMS traffic to the base stations102 belonging to a Multicast Broadcast Single Frequency Network (MBSFN)area broadcasting a particular service, and may be responsible forsession management (start/stop) and for collecting eMBMS relatedcharging information.

The core network 190 may include a Access and Mobility ManagementFunction (AMF) 192, other AMFs 193, a Session Management Function (SMF)194, and a User Plane Function (UPF) 195. The AMF 192 may be incommunication with a Unified Data Management (UDM) 196. The AMF 192 isthe control node that processes the signaling between the UEs 104 andthe core network 190. Generally, the AMF 192 provides QoS flow andsession management. All user Internet protocol (IP) packets aretransferred through the UPF 195. The UPF 195 provides UE IP addressallocation as well as other functions. The UPF 195 is connected to theIP Services 197. The IP Services 197 may include the Internet, anintranet, an IP Multimedia Subsystem (IMS), a Packet Switch (PS)Streaming (PSS) Service, and/or other IP services.

The base station may include and/or be referred to as a gNB, Node B,eNB, an access point, a base transceiver station, a radio base station,a radio transceiver, a transceiver function, a basic service set (BSS),an extended service set (ESS), a transmit reception point (TRP), or someother suitable terminology. The base station 102 provides an accesspoint to the EPC 160 or core network 190 for a UE 104. Examples of UEs104 include a cellular phone, a smart phone, a session initiationprotocol (SIP) phone, a laptop, a personal digital assistant (PDA), asatellite radio, a global positioning system, a multimedia device, avideo device, a digital audio player (e.g., MP3 player), a camera, agame console, a tablet, a smart device, a wearable device, a vehicle, anelectric meter, a gas pump, a large or small kitchen appliance, ahealthcare device, an implant, a sensor/actuator, a display, or anyother similar functioning device. Some of the UEs 104 may be referred toas IoT devices (e.g., parking meter, gas pump, toaster, vehicles, heartmonitor, etc.). The UE 104 may also be referred to as a station, amobile station, a subscriber station, a mobile unit, a subscriber unit,a wireless unit, a remote unit, a mobile device, a wireless device, awireless communications device, a remote device, a mobile subscriberstation, an access terminal, a mobile terminal, a wireless terminal, aremote terminal, a handset, a user agent, a mobile client, a client, orsome other suitable terminology. Referring again to FIG. 1, in certainaspects, the UE 104 may be configured for the alert/warning messageprotection in MSIM as discussed infra (198).

FIG. 2A is a diagram 200 illustrating an example of a first subframewithin a 5G NR frame structure. FIG. 2B is a diagram 230 illustrating anexample of DL channels within a 5G NR subframe. FIG. 2C is a diagram 250illustrating an example of a second subframe within a 5G NR framestructure. FIG. 2D is a diagram 280 illustrating an example of ULchannels within a 5G NR subframe. The 5G NR frame structure may befrequency division duplexed (FDD) in which for a particular set ofsubcarriers (carrier system bandwidth), subframes within the set ofsubcarriers are dedicated for either DL or UL, or may be time divisionduplexed (TDD) in which for a particular set of subcarriers (carriersystem bandwidth), subframes within the set of subcarriers are dedicatedfor both DL and UL. In the examples provided by FIGS. 2A, 2C, the 5G NRframe structure is assumed to be TDD, with subframe 4 being configuredwith slot format 28 (with mostly DL), where D is DL, U is UL, and F isflexible for use between DL/UL, and subframe 3 being configured withslot format 34 (with mostly UL). While subframes 3, 4 are shown withslot formats 34, 28, respectively, any particular subframe may beconfigured with any of the various available slot formats 0-61. Slotformats 0, 1 are all DL, UL, respectively. Other slot formats 2-61include a mix of DL, UL, and flexible symbols. UEs are configured withthe slot format (dynamically through DL control information (DCI), orsemi-statically/statically through radio resource control (RRC)signaling) through a received slot format indicator (SFI). Note that thedescription infra applies also to a 5G NR frame structure that is TDD.

Other wireless communication technologies may have a different framestructure and/or different channels. A frame (10 ms) may be divided into10 equally sized subframes (1 ms). Each subframe may include one or moretime slots. Subframes may also include mini-slots, which may include 7,4, or 2 symbols. Each slot may include 7 or 14 symbols, depending on theslot configuration. For slot configuration 0, each slot may include 14symbols, and for slot configuration 1, each slot may include 7 symbols.The symbols on DL may be cyclic prefix (CP) OFDM (CP-OFDM) symbols. Thesymbols on UL may be CP-OFDM symbols (for high throughput scenarios) ordiscrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (alsoreferred to as single carrier frequency-division multiple access(SC-FDMA) symbols) (for power limited scenarios; limited to a singlestream transmission). The number of slots within a subframe is based onthe slot configuration and the numerology. For slot configuration 0,different numerologies μ 0 to 4 allow for 1, 2, 4, 8, and 16 slots,respectively, per subframe. For slot configuration 1, differentnumerologies 0 to 2 allow for 2, 4, and 8 slots, respectively, persubframe. Accordingly, for slot configuration 0 and numerology μ, thereare 14 symbols/slot and 2^(μ) slots/subframe. The subcarrier spacing andsymbol length/duration are a function of the numerology. The subcarrierspacing may be equal to 2^(μ)*15 kHz, where μ is the numerology 0 to 4.As such, the numerology μ=0 has a subcarrier spacing of 15 kHz and thenumerology μ=4 has a subcarrier spacing of 240 kHz. The symbollength/duration is inversely related to the subcarrier spacing. FIGS.2A-2D provide an example of slot configuration 0 with 14 symbols perslot and numerology μ=2 with 4 slots per subframe. The slot duration is0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration isapproximately 16.67 μs. Within a set of frames, there may be one or moredifferent bandwidth parts (BWPs) (see FIG. 2B) that are frequencydivision multiplexed. Each BWP may have a particular numerology.

A resource grid may be used to represent the frame structure. Each timeslot includes a resource block (RB) (also referred to as physical RBs(PRBs)) that extends 12 consecutive subcarriers. The resource grid isdivided into multiple resource elements (REs). The number of bitscarried by each RE depends on the modulation scheme.

As illustrated in FIG. 2A, some of the REs carry reference (pilot)signals (RS) for the UE. The RS may include demodulation RS (DM-RS)(indicated as R_(x) for one particular configuration, where 100× is theport number, but other DM-RS configurations are possible) and channelstate information reference signals (CSI-RS) for channel estimation atthe UE. The RS may also include beam measurement RS (BRS), beamrefinement RS (BRRS), and phase tracking RS (PT-RS).

FIG. 2B illustrates an example of various DL channels within a subframeof a frame. The physical downlink control channel (PDCCH) carries DCIwithin one or more control channel elements (CCEs), each CCE includingnine RE groups (REGs), each REG including four consecutive REs in anOFDM symbol. A PDCCH within one BWP may be referred to as a controlresource set (CORESET). Additional BWPs may be located at greater and/orlower frequencies across the channel bandwidth. A primarysynchronization signal (PSS) may be within symbol 2 of particularsubframes of a frame. The PSS is used by a UE 104 to determinesubframe/symbol timing and a physical layer identity. A secondarysynchronization signal (SSS) may be within symbol 4 of particularsubframes of a frame. The SSS is used by a UE to determine a physicallayer cell identity group number and radio frame timing. Based on thephysical layer identity and the physical layer cell identity groupnumber, the UE can determine a physical cell identifier (PCI). Based onthe PCI, the UE can determine the locations of the aforementioned DM-RS.The physical broadcast channel (PBCH), which carries a masterinformation block (MIB), may be logically grouped with the PSS and SSSto form a synchronization signal (SS)/PBCH block (also referred to as SSblock (SSB)). The MIB provides a number of RBs in the system bandwidthand a system frame number (SFN). The physical downlink shared channel(PDSCH) carries user data, broadcast system information not transmittedthrough the PBCH such as system information blocks (SIBs), and pagingmessages.

As illustrated in FIG. 2C, some of the REs carry DM-RS (indicated as Rfor one particular configuration, but other DM-RS configurations arepossible) for channel estimation at the base station. The UE maytransmit DM-RS for the physical uplink control channel (PUCCH) and DM-RSfor the physical uplink shared channel (PUSCH). The PUSCH DM-RS may betransmitted in the first one or two symbols of the PUSCH. The PUCCHDM-RS may be transmitted in different configurations depending onwhether short or long PUCCHs are transmitted and depending on theparticular PUCCH format used. The UE may transmit sounding referencesignals (SRS). The SRS may be transmitted in the last symbol of asubframe. The SRS may have a comb structure, and a UE may transmit SRSon one of the combs. The SRS may be used by a base station for channelquality estimation to enable frequency-dependent scheduling on the UL.

FIG. 2D illustrates an example of various UL channels within a subframeof a frame. The PUCCH may be located as indicated in one configuration.The PUCCH carries uplink control information (UCI), such as schedulingrequests, a channel quality indicator (CQI), a precoding matrixindicator (PMI), a rank indicator (RI), and hybrid automatic repeatrequest (HARQ) ACK/NACK feedback. The PUSCH carries data, and mayadditionally be used to carry a buffer status report (BSR), a powerheadroom report (PHR), and/or UCI.

FIG. 3 is a block diagram of a base station 310 in communication with aUE 350 in an access network. In the DL, IP packets from the EPC 160 maybe provided to a controller/processor 375. The controller/processor 375implements layer 3 and layer 2 functionality. Layer 3 includes a radioresource control (RRC) layer, and layer 2 includes a service dataadaptation protocol (SDAP) layer, a packet data convergence protocol(PDCP) layer, a radio link control (RLC) layer, and a medium accesscontrol (MAC) layer. The controller/processor 375 provides RRC layerfunctionality associated with broadcasting of system information (e.g.,MIB, SIBs), RRC connection control (e.g., RRC connection paging, RRCconnection establishment, RRC connection modification, and RRCconnection release), inter radio access technology (RAT) mobility, andmeasurement configuration for UE measurement reporting; PDCP layerfunctionality associated with header compression/decompression, security(ciphering, deciphering, integrity protection, integrity verification),and handover support functions; RLC layer functionality associated withthe transfer of upper layer packet data units (PDUs), error correctionthrough ARQ, concatenation, segmentation, and reassembly of RLC servicedata units (SDUs), re-segmentation of RLC data PDUs, and reordering ofRLC data PDUs; and MAC layer functionality associated with mappingbetween logical channels and transport channels, multiplexing of MACSDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs,scheduling information reporting, error correction through HARQ,priority handling, and logical channel prioritization.

The transmit (TX) processor 316 and the receive (RX) processor 370implement layer 1 functionality associated with various signalprocessing functions. Layer 1, which includes a physical (PHY) layer,may include error detection on the transport channels, forward errorcorrection (FEC) coding/decoding of the transport channels,interleaving, rate matching, mapping onto physical channels,modulation/demodulation of physical channels, and MIA/10 antennaprocessing. The TX processor 316 handles mapping to signalconstellations based on various modulation schemes (e.g., binaryphase-shift keying (BPSK), quadrature phase-shift keying (QPSK),M-phase-shift keying (M-PSK), M-quadrature amplitude modulation(M-QAM)). The coded and modulated symbols may then be split intoparallel streams. Each stream may then be mapped to an OFDM subcarrier,multiplexed with a reference signal (e.g., pilot) in the time and/orfrequency domain, and then combined together using an Inverse FastFourier Transform (IFFT) to produce a physical channel carrying a timedomain OFDM symbol stream. The OFDM stream is spatially precoded toproduce multiple spatial streams. Channel estimates from a channelestimator 374 may be used to determine the coding and modulation scheme,as well as for spatial processing. The channel estimate may be derivedfrom a reference signal and/or channel condition feedback transmitted bythe UE 350. Each spatial stream may then be provided to a differentantenna 320 via a separate transmitter 318TX. Each transmitter 318TX maymodulate an RF carrier with a respective spatial stream fortransmission.

At the UE 350, each receiver 354RX receives a signal through itsrespective antenna 352. Each receiver 354RX recovers informationmodulated onto an RF carrier and provides the information to the receive(RX) processor 356. The TX processor 368 and the RX processor 356implement layer 1 functionality associated with various signalprocessing functions. The RX processor 356 may perform spatialprocessing on the information to recover any spatial streams destinedfor the UE 350. If multiple spatial streams are destined for the UE 350,they may be combined by the RX processor 356 into a single OFDM symbolstream. The RX processor 356 then converts the OFDM symbol stream fromthe time-domain to the frequency domain using a Fast Fourier Transform(FFT). The frequency domain signal comprises a separate OFDM symbolstream for each subcarrier of the OFDM signal. The symbols on eachsubcarrier, and the reference signal, are recovered and demodulated bydetermining the most likely signal constellation points transmitted bythe base station 310. These soft decisions may be based on channelestimates computed by the channel estimator 358. The soft decisions arethen decoded and deinterleaved to recover the data and control signalsthat were originally transmitted by the base station 310 on the physicalchannel. The data and control signals are then provided to thecontroller/processor 359, which implements layer 3 and layer 2functionality.

The controller/processor 359 can be associated with a memory 360 thatstores program codes and data. The memory 360 may be referred to as acomputer-readable medium. In the UL, the controller/processor 359provides demultiplexing between transport and logical channels, packetreassembly, deciphering, header decompression, and control signalprocessing to recover IP packets from the EPC 160. Thecontroller/processor 359 is also responsible for error detection usingan ACK and/or NACK protocol to support HARQ operations.

Similar to the functionality described in connection with the DLtransmission by the base station 310, the controller/processor 359provides RRC layer functionality associated with system information(e.g., MIB, SIBs) acquisition, RRC connections, and measurementreporting; PDCP layer functionality associated with headercompression/decompression, and security (ciphering, deciphering,integrity protection, integrity verification); RLC layer functionalityassociated with the transfer of upper layer PDUs, error correctionthrough ARQ, concatenation, segmentation, and reassembly of RLC SDUs,re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; andMAC layer functionality associated with mapping between logical channelsand transport channels, multiplexing of MAC SDUs onto TBs,demultiplexing of MAC SDUs from TBs, scheduling information reporting,error correction through HARQ, priority handling, and logical channelprioritization.

Channel estimates derived by a channel estimator 358 from a referencesignal or feedback transmitted by the base station 310 may be used bythe TX processor 368 to select the appropriate coding and modulationschemes, and to facilitate spatial processing. The spatial streamsgenerated by the TX processor 368 may be provided to different antenna352 via separate transmitters 354TX. Each transmitter 354TX may modulatean RF carrier with a respective spatial stream for transmission.

The UL transmission is processed at the base station 310 in a mannersimilar to that described in connection with the receiver function atthe UE 350. Each receiver 318RX receives a signal through its respectiveantenna 320. Each receiver 318RX recovers information modulated onto anRF carrier and provides the information to a RX processor 370.

The controller/processor 375 can be associated with a memory 376 thatstores program codes and data. The memory 376 may be referred to as acomputer-readable medium. In the UL, the controller/processor 375provides demultiplexing between transport and logical channels, packetreassembly, deciphering, header decompression, control signal processingto recover IP packets from the UE 350. IP packets from thecontroller/processor 375 may be provided to the EPC 160. Thecontroller/processor 375 is also responsible for error detection usingan ACK and/or NACK protocol to support HARQ operations. At least one ofthe TX processor 368, the RX processor 356, and the controller/processor359 may be configured to perform aspects in connection with 198 of FIG.1.

Being able to receive and to process alert/warning messages frommultiple subscriptions is critical in MSIM. Each subscription isassociated with a different SIM. Examples of warning messages includemessages from the ETWS. Examples of alert messages include messages fromthe CMAS. The network associated with each SIM pages UEs that thenetwork will broadcast SIBs associated with the alert/warning messages.The network broadcasts to UEs a SIB1 indicating a schedule for receivinga SIB12 (or other SIB that includes the alert/warning messages), andsubsequently broadcasts the SIB12 including the alert/warning messagesbased on the schedule. For each subscription, UEs receive the SIB1including the SIB12 schedule and the SIB12 message list (includingmessage IDs for the scheduled alert/warning messages), and attempt toreceive and to decode the SIB12 including the alert/warning messages.For example, if a UE includes two SIMS, the UE receives the SIB1including the SIB12 schedule associated with a first of the two SIMS,and attempts to receive and to decode the SIB12 including thealert/warning messages for the first SIM. In addition, the UE receivesthe SIB1 including the SIB12 schedule associated with a second of thetwo SIMS, and also attempts to receive and to decode the SIB12 includethe alert/warning messages for the second SIM. In some situations, therecan be a conflict/collision, and the UE may lose alert/warning messagesfrom either or both of the two SIMS. To address the conflict/collisionand to help prevent the UE from losing alert/warning messages, differentconfigurations for alert/warning message protection in MSIM areprovided, where the UE has a single receiver for receiving and decodingthe alert/warning messages. Accordingly, as the UE has a single receiverfor receiving and decoding the alert/warning messages, the UE exhibitssingle radio (SR) dual SIM dual standby (DSDS) (SR-DSDS) behavior.

The UE may request TRM resources to read (e.g., to receive and todecode) the alert/warning messages for a particular subscription. Thenetworks may broadcast alert/warning segments (e.g., in LTE/NR)periodically with a specific periodicity, such as for example a multipleof 80 ms. As the periodicity for the alert/warning messages may be thesame or multiple of the same value for the different subscriptions andas the UE can only receive on one BWP at one time as a result of theSR-DSDS behavior, collisions of the alert/warning segments from thesubscriptions may be quite high. That is, if the alert/warning messagesare transmitted from their respective networks (which may be the samenetwork or different networks) at the same time or in overlapping timeperiods, the UE may fail to receive the alert/warning messages from oneor both of the subscriptions. UE RRC behavior (at the basebandprocessor/modem) is to collect all the segments for a particularalert/warning message before sending the alert/warning message to the APfor display to the user. If a particular segment is not received due tothe TRM resource unavailability, the whole alert/warning message may notbe displayed. As such, both subscriptions may fail to report analert/warning message because of a failure to receive a segment.

In order to facilitate alert/warning message protection in MSIM when theUE exhibits SR-DSDS behavior, five different configurations/approachesare provided with respect to FIGS. 4-8. In FIG. 4, an alert/warningmessage protection in MSIM is provided using an FCFS approach. In FIG.5, an alert/warning message protection in MSIM is provided using an FCFSapproach while the UE is operating in SR-DSDS page sharing mode. In FIG.6, an alert/warning message protection in MSIM is provided using an APtrigger approach. In FIG. 7, an alert/warning message protection in MSIMis provided using a message stitching approach. Finally, in FIG. 8, analert/warning message protection in MSIM is providing using an SSIMapproach.

FIG. 4 is a first timing diagram 400 illustrating alert/warning messageprotection in MSIM using an FCFS approach. The example provided withrespect to FIG. 4 is with respect to CMAS messages, but generally, themessages may be any alert/warning messages and may include CMAS messagesand/or ETWS messages. The approach applies to SR-DSDS, including normalmode and page sharing mode. As illustrated in FIG. 4, at 412, a firstnetwork NW1 (i.e., base station associated with the first network NW1)402 schedules a CMAS broadcast. At 414, the first network NW1 402transmits paging information indicating that a SIB1 will be subsequentlybroadcasted. At 414, a UE receives the paging information from the firstnetwork NW1 402. At 416, the first network NW1 402 broadcasts the SIB1,which includes scheduling information (e.g., instances and/orperiodicity) for a SIB12 that contains the CMAS messages. At 416, the UEreceives the SIB1 based on the received paging information. For example,the SIB1 is received in association with a first subscription 404. Morespecifically, a baseband processor (modem) at the UE receives the SIB1at an RRC layer, where the SIB1 is associated with the firstsubscription 404. At 418, the first subscription 404 requests anindication of receiver resources (e.g., an FCFS lock) from an FCFS lockmodule 406. At 420, the FCFS lock is granted by the FCFS lock module406. The FCFS lock locks the TRM resources for and assigns the TRMresources to receiving the CMAS segments with the first subscription 404associated with a first SIM. The FCFS lock also prevents the TRMresources from being used for receiving CMAS segments associated with asecond subscription 408 associated with a second SIM. At 421, the firstnetwork NW1 402 broadcasts a plurality of SIB12s including the CMASsegments. At 422, the UE receives the SIB12s using the TRM resources andbegins decoding the CMAS segments received in the SIB12s. The CMASsegments may be associated with one or more message IDs.

At 424, a second network NW2 (i.e., base station associated with thesecond network NW2) 410 schedules a CMAS broadcast. At 426, the secondnetwork NW2 410 transmits paging information indicating that a SIB1 willbe subsequently broadcasted. At 426, the UE receives the paginginformation from the second network NW2 410. At 428, the second networkNW2 410 broadcasts the SIB1, which includes scheduling information(e.g., instances and/or periodicity) for the SIB12 that contains theCMAS messages. At 428, the UE receives the SIB1. For example, the SIB1is received in association with a second subscription 408. In an aspect,the baseband processor (modem) at the UE receives the SIB1 at an RRClayer, where the SIB1 is associated with the second subscription 408. At430, as the TRM resources are assigned in association with the firstsubscription 404, the UE does not request an FCFS lock and ignoresreceiving and decoding the CMAS segments for the second subscription408. Without the FCFS lock, had the UE in association with the secondsubscription 408 utilized the TRM resources to receive the correspondingCMAS message, the UE in association with the first subscription 404 mayhave failed to fully receive and decode the CMAS segments and may havetherefore lost the corresponding CMAS message for the first subscription404.

At 432, the UE in association with the first subscription 404 completesreceiving and decoding all the CMAS segments for the one or more messageIDs. Subsequently, at 434, the UE in association with the firstsubscription 404 releases the FCFS lock or transfers the FCFS lock tothe second subscription 408. If the UE releases the FCFS lock (insteadof transferring the FCFS lock), at 436, the UE may request the FCFS lockfor the second subscription 408 from the FCFS lock module 406. At 438,the FCFS lock is granted by the FCFS lock module 406. The FCFS locklocks the TRM resources for and assigns the TRM resources to receivingthe CMAS segments with the second subscription 408 associated with thesecond SIM. The FCFS lock also prevents the TRM resources from beingused for receiving CMAS segments associated with the first subscription404 associated with the first SIM. At 439, the second network NW2 410broadcasts a plurality of SIB12s including the CMAS segments. At 440,the UE receives the SIB12s and begins decoding CMAS segments received inthe SIB12s. Note that the UE did not receive the CMAS segmentsassociated with the SIB12 scheduled in the SIB1 at 428, but at 440,receives a subsequent broadcast of the SIB12 including CMAS segments. Asnetworks may rebroadcast the same CMAS messages multiple times, the UEmay not necessarily lose any CMAS messages due to the delay in receivingand decoding the CMAS messages from the second network NW2 410.

Subsequently, at 442, the UE in association with the second subscription408 releases the FCFS lock or transfers the FCFS lock to the firstsubscription 404. If the UE releases the FCFS lock (instead oftransferring the FCFS lock), at 444, the UE may request the FCFS lockfor the first subscription 404 from the FCFS lock module 406. At 446,the FCFS lock is granted by the FCFS lock module 406. The FCFS locklocks the TRM resources for and assigns the TRM resources to receivingthe CMAS segments with the first subscription 404 associated with thefirst SIM. The FCFS lock also prevents the TRM resources from being usedfor receiving CMAS segments associated with the second subscription 408.

At 447, the first network NW1 402 broadcasts a plurality of SIB12sincluding the CMAS segments. At 448, the UE receives and decodes thereceived CMAS segments. At 450, the UE determines that the UE alreadyreceived the CMAS segments and the corresponding CMAS message and stopsfurther receiving/decoding of the CMAS segments. Accordingly, in ordernot to miss any CMAS messages from the second subscription 408, at 452,the UE either transfers the FCFS lock to the second subscription 408 orreleases the FCFS lock from the first subscription 404. If the UEreleases the FCFS lock (instead of transferring the FCFS lock), at 454,the UE may request the FCFS lock for the second subscription 408 fromthe FCFS lock module 406. At 456, the FCFS lock is granted by the FCFSlock module 406. The FCFS lock locks the TRM resources for and assignsthe TRM resources to receiving the CMAS segments with the secondsubscription 408 associated with the second SIM. The FCFS lock alsoprevents the TRM resources from being used for receiving CMAS segmentsassociated with the first subscription 404 associated with the firstSIM. At 457, the second network NW2 410 broadcasts a plurality of SIB12sincluding the CMAS segments. At 458, the UE receives the SIB12s andreceives and decodes the CMAS segments received in the SIB12s.Thereafter, at 460, the second network NW2 410 de-schedules the CMASbroadcast and, at 462, transmits a page indicating the de-schedulinginformation. At 462, the UE receives the page including the CMASbroadcast de-scheduling information, and at 464, releases the FCFS lockwith the FCFS lock module 406.

In certain aspects, the two subscriptions of the UE exhibiting SR-DSDSbehavior may acquire service on the same cell. For example, anon-dedicated data subscription (nDDS) of the UE may acquire service onthe same cell as a dedicated data subscription (DDS) of the UE. The DDSmay be in a connected or idle mode, and the nDDS may be in an idle mode.The UE may operate in a SR-DSDS page sharing mode when the twosubscriptions acquire service on the same cell. While the UE isoperating in the SR-DSDS page sharing mode, the UE in association withthe DDS may monitor pages (e.g., pages for CMAS broadcast) for the DDSand additionally for the nDDS, which helps avoid tune-aways on the DDSfor any nDDS activities. An example of a UE facilitating analert/warning message protection in MSIM using FCFS approach while theUE operates in SR-DSDS page sharing mode is shown in FIG. 5.

FIG. 5 is a second timing diagram 500 illustrating alert/warning messageprotection in MSIM using an FCFS approach while the UE is operating inSR-DSDS page sharing mode. The example provided with respect to FIG. 5is with respect to CMAS messages, but generally, the messages may be anyalert/warning messages and may include CMAS messages and/or ETWSmessages. The approach applies to SR-DSDS page sharing mode. Asillustrated in FIG. 5, at 512, a NW (i.e., base station associated withthe network NW) 502 schedules a CMAS broadcast. At 514, the network NW502 transmits paging information indicating that a SIB1 will besubsequently broadcasted. At 516, the network NW 502 broadcasts theSIB1, which includes scheduling information for a SIB12 that containsthe CMAS messages. At 516, a UE receives the SIB 1. Specifically, theSIB1 is received in association with a first subscription 504. Morespecifically, a baseband processor (modem) at the UE receives the SIB1at an RRC layer, where the SIB1 is associated with the firstsubscription 504. At 518, the UE in association with the firstsubscription 504 requests an FCFS lock from an FCFS lock module 506. At520, the FCFS lock is granted by the FCFS lock module 506. The FCFS locklocks the TRM resources for and assigns the TRM resources to receivingthe CMAS segments with the first subscription 504 associated with afirst SIM. In page sharing mode, as the first subscription 504associated with the first SIM and a second subscription 508 associatedwith a second SIM acquire service from the same cell, the CMAS segmentsreceived with the first subscription 504 associated with the first SIMincludes CMAS segments for the second subscription 508 associated withthe second SIM. In this manner, in a page sharing mode, the FCFS lockdoes not prevent the TRM resources from being used for receiving CMASsegments associated with the second subscription 508 associated with thesecond SIM. At 521, the network NW 502 broadcasts a plurality of SIB12sincluding the CMAS segments. At 522, the UE in association with firstsubscription receives the SIB12s using the TRM resources and beginsdecoding the CMAS segments received in the SIB12s. The CMAS segments maybe associated with one or more message IDs.

At 524, the UE in association with the first subscription 504 completesreceiving and decoding all the CMAS segments for the one or more messageIDs. The UE in association with the first subscription 504 may form adecoded CMAS message based on the decoded CMAS segments. For example,the UE in association with the first subscription 504 may concatenatethe decoded CMAS segments to form the decoded CMAS message. At 526, theUE in association with the first subscription 504 transmits the decodedCMAS message to AP. At 528, the UE in association with the firstsubscription 504 transmits the decoded CMAS message to the UE inassociation with the second subscription 508. In certain aspects, the UEin association with the first subscription 504 may be configured todecode the CMAS segments based on the message IDs associated with theCMAS segments. In certain aspects, the UE in association with the firstsubscription 504 may be configured to decode a CMAS segment as long asthe message ID associated with the CMAS segment is part of a list ofmessage IDs with which either the first subscription 504, the secondsubscription 508, or both are associated. In certain aspects, a messageID is associated with a subscription (e.g., a first subscription 504, asecond subscription 508, and the like) if the message ID is of interestto that subscription. For example, if a message ID 1 is not of interestto the first subscription 504, and thus, not associated with the firstsubscription 504, but the message ID 1 is of interest to the secondsubscription 504, and thus associated with the second subscription 508,then the UE in association with the first subscription 504 decodesand/or reads the one or more CMAS segments associated with message ID 1and transmits them to the UE in association with the second subscription508. In certain aspects, the UE may receive one or more lists of messageIDs from a network (e.g., network 502), where the message IDs are ofinterest to and/or associated with the subscriptions (e.g., firstsubscription 504, second subscription 508, and the like) associated withthe UE.

The UE in association with the first subscription 504 may transmit theone or more message IDs associated with the CMAS segments to the UE inassociation with the second subscription 508 when transmitting thedecoded CMAS message to the UE in association with the secondsubscription 508. Based on the one or more message IDs associated withthe CMAS segments, the UE in association with the second subscription508 may determine whether the decoded CMAS message is associated withthe second subscription 508. At 530, if the decoded message isassociated with the second subscription 508, the UE in association withthe second subscription 508 transmits the decoded CMAS message to theAP. Subsequently, at 532, the network NW 502 de-schedules the CMASbroadcast, and at 534, transmits a page including de-schedulinginformation. At 534, the UE in association with the first subscription504 receives the page including the CMAS broadcast de-schedulinginformation. At 538, the UE in association with the first subscription504 releases the FCFS lock with the FCFS lock module 406.

FIG. 6 is a third timing diagram 600 illustrating alert/warning messageprotection in MSIM using an AP trigger approach. The example providedwith respect to FIG. 6 is with respect to CMAS messages, but generally,the messages may be any alert/warning messages and may include CMASmessages and/or ETWS messages. The approach applies to SR-DSDS,including normal mode and page sharing mode. As illustrated in FIG. 6,at 612, a first network NW1 (i.e., base station associated with thefirst network NW1) 602 schedules a CMAS broadcast. At 614, the firstnetwork NW1 602 transmits paging information indicating that a SIB1 willbe subsequently broadcasted. At 616, the first network NW1 602broadcasts the SIB1, which includes scheduling information for a SIB12that contains the CMAS messages. At 616, a UE receives the SIB 1.Specifically, the SIB1 is received in association with a firstsubscription 604. More specifically, a baseband processor (modem) at theUE receives the SIB1 at an RRC layer, where the SIB1 is associated withthe first subscription 604. At 618, the UE in association with the firstsubscription 604 requests an FCFS lock from an FCFS lock module 606. At620, the FCFS lock is granted by the FCFS lock module 606. The FCFS locklocks the TRM resources for and assigns the TRM resources to receivingthe CMAS segments with the first subscription 604 associated with afirst SIM. The FCFS lock also prevents the TRM resources from being usedfor receiving CMAS segments associated with a second subscription 608associated with a second SIM. At 621, the first network NW1 602broadcasts a plurality of SIB12s including the CMAS segments. At 622,the UE receives the SIB12s and begins decoding the CMAS segmentsreceived in the SIB12s. The CMAS segments are associated with one ormore message IDs.

At 624, a second network NW2 (i.e., base station associated with thesecond network NW2) 610 schedules a CMAS broadcast. At 626, the secondnetwork NW2 610 transmits paging information indicating that a SIB1 willbe subsequently broadcasted. At 628, the second network NW2 610broadcasts the SIB1, which includes scheduling information for the SIB12that contains the CMAS messages. At 628, the UE receives the SIB 1.Specifically, the SIB1 is received in association with a secondsubscription 608. More specifically, the baseband processor (modem) atthe UE receives the SIB1 at an RRC layer, where the SIB1 is associatedwith the second subscription 608. At 630, as the TRM resources areassigned in association with the first subscription 604, the UE does notrequest an FCFS lock and ignores receiving and decoding the CMASsegments for the second subscription 608. Without the FCFS lock, had theUE in association with the second subscription 608 utilized the TRMresources to receive the corresponding CMAS message, the UE inassociation with the first subscription 604 may have failed to fullyreceive and decode the CMAS segments and may have therefore lost thecorresponding CMAS message.

At 632, the UE in association with the first subscription 604 completesreceiving and decoding all the CMAS segments for the message ID.Subsequently, at 634, the UE in association with the first subscription604, sends the CMAS message to the AP 690. The AP 690 then provides theCMAS message to a user of the UE, such as through for example, display,sounds, vibrations, or the like. Subsequently, at 636, the UE releasesthe FCFS lock with the FCFS lock module 606 for the first subscription604. At 638, the AP 690 triggers an increase in a TRM priority for thesecond subscription 608 if the second subscription 608 has a CMASmessage to receive and decode. At 640, the UE in association with thesecond subscription 608 and in response to the trigger from the AP 690,increases the TRM priority for the second subscription 608 and grantsthe second subscription 608 the TRM resources for receiving/decoding theCMAS message. At 641, the second network NW2 610 broadcasts a pluralityof SIB12s including the CMAS segments. At 642, the UE in associationwith the second subscription 608 receives/decodes the CMAS segments toobtain the CMAS message. Thereafter, at 644, the second network NW2 610de-schedules the CMAS broadcast. At 646, the second network NW2 610transmits a page including the CMAS de-scheduling information. The UE inassociation with the second subscription 608 receives the page with theCMAS de-scheduling information.

FIG. 7 is a fourth timing diagram 700 illustrating alert/warning messageprotection in MSIM using a message stitching approach. The exampleprovided with respect to FIG. 7 is with respect to CMAS messages, butgenerally, the messages may be any alert/warning messages and mayinclude CMAS messages and/or ETWS messages. The approach applies toSR-DSDS. As illustrated in FIG. 7, at 712, a first network NW1 (i.e.,base station associated with the first network NW1) 702 schedules a CMASbroadcast with a particular message ID. At 714, the first network NW1702 transmits paging information indicating that a SIB1 will besubsequently broadcasted. At 716, the first network NW1 502 broadcaststhe SIM, which includes scheduling information for a SIB12 that containsthe CMAS messages. At 716, a UE receives the SIB 1. Specifically, theSIB1 is received in association with a first subscription 704. Morespecifically, a baseband processor (modem) at the UE receives the SIB1at an RRC layer, where the SIB1 is associated with the firstsubscription 704. At 721, the first network NW1 702 broadcasts aplurality of SIB12s including the CMAS segments. At 722, the UE receivesat least one of the SIB12s and starts decoding the received CMASsegments. At 724, a second network NW2 (i.e., base station associatedwith the second network NW2) 710 schedules a CMAS broadcast with thesame message ID as in 712. At 726, the second network NW2 710 transmitspaging information indicating that a SIB1 will be subsequentlybroadcasted. At 728, the second network NW2 710 broadcasts the SIB1,which includes scheduling information for the SIB12 that contains theCMAS messages. At 728, the UE receives the SIB 1. Specifically, the SIB1is received in association with a second subscription 708. Morespecifically, the baseband processor (modem) at the UE receives the SIB1at an RRC layer, where the SIB1 is associated with the secondsubscription 708. At 741, the second network NW2 710 broadcasts aplurality of SIB12s including the CMAS segments. At 742, a priority ofthe second subscription 708 may be increased to be greater than apriority for the first subscription. Consequently, at 742, before the UEcompletes reception and decoding of the CMAS segments for the firstsubscription 704, the UE receives and decodes CMAS segments that the UEreceives in association with the second subscription 708. Accordingly,the UE does not receive all of the CMAS segments at 722 to construct theCMAS message for the first subscription 704. At 770, as the CMASsegments from the first and second subscriptions 704, 708 have the samemessage ID, the UE combines the CMAS segments from the first and secondsubscriptions 704, 708 (possibly utilizing the same database) with RRCsegment stitching in order to construct the CMAS message. At 772, the UEcompletes the receiving and the decoding of all the CMAS segments.

FIG. 8 is a fifth timing diagram 800 illustrating alert/warning messageprotection in MSIM using an SSIM approach. In the SSIM approach, a UEmaintains TRM resources dedicated to a particular subscription untilthat subscription goes out of service (OOS). Once a subscription goesOOS, the TRM resources may be dedicated for a different subscriptionuntil that subscription itself goes OOS. The example provided withrespect to FIG. 8 is with respect to CMAS messages, but generally, themessages may be any alert/warning messages and may include CMAS messagesand/or ETWS messages. The approach applies to SR-DSDS. As illustrated inFIG. 8, at 812, a first network NW1 (i.e., base station associated withthe first network NW1) 802 schedules a CMAS broadcast. At 814, the firstnetwork NW1 802 transmits paging information indicating that a SIB1 willbe subsequently broadcasted. At 816, the first network NW1 802broadcasts the SIB1, which includes scheduling information for a SIB12that contains the CMAS messages. At 816, a UE receives the SIB1.Specifically, the SIB1 is received in association with a firstsubscription 804. More specifically, a baseband processor (modem) at theUE receives the SIB1 at an RRC layer, where the SIB1 is associated withthe first subscription 804. At 821, the first network NW1 802 broadcastsa plurality of SIB12s including the CMAS segments. At 822, the UEreceives the SIB12s and begins decoding the CMAS segments received inthe SIB12s. The CMAS segments are associated with a particular messageID.

At 824, a second network NW2 (i.e., base station associated with thesecond network NW2) 810 schedules a CMAS broadcast. At 826, the secondnetwork NW2 810 transmits paging information indicating that a SIB1 willbe subsequently broadcasted. At 828, the second network NW2 810broadcasts the SIB1, which includes scheduling information for the SIB12that contains the CMAS messages. At 828, the UE receives the SIB 1.Specifically, the SIB1 is received in association with a secondsubscription 808. More specifically, the baseband processor (modem) atthe UE receives the SIB1 at an RRC layer, where the SIB1 is associatedwith the second subscription 808. At 830, the UE determines that thefirst subscription is still in service, and therefore the UE ignoresreceiving and decoding the CMAS segments for the second subscription808. At 832, the UE in association with the first subscription 804completes receiving and decoding all the CMAS segments for the messageID. Subsequently, at 872, the first network NW1 802 de-schedules theCMAS broadcast, and at 874, transmits a page including de-schedulinginformation. At 874, the UE receives the page with the de-schedulinginformation. At 876, the UE sends the complete decoded CMAS message tothe AP.

In one configuration, the approach provided with respect to FIG. 8 maybe applied if the first network NW1 802 and the second network NW2 810are the same and/or the message IDs in the message lists from the firstand second networks 802, 810 are the same (e.g., the message lists fromthe first and second networks 802, 810 are the same), where the UEignores at 830 alert/warning messages with the same message ID as the UEreceives at 822. In such a configuration, the UE does not lose anyalert/warning messages by ignoring SIB12 broadcasts at 830 from thesecond network NW2 810.

FIG. 9 is a first flowchart 900 of a first method of wirelesscommunication. The flowchart 900 is associated with the FCFSconfiguration/approach. The method may be performed by a UE (e.g., theUE 104; the apparatus 1402). At 902, the UE determines that a firstmobile alert associated with a first SIM is scheduled for broadcast froma first network. For example, referring to FIG. 4, the at 414, 416 theUE determines that a first mobile alert associated with a first SIM 404is scheduled for broadcast from a first network 402. At 904, the UEobtains, based on the determination that the first mobile alert isscheduled for broadcast, an indication of receiver resources assignedfor receiving the first mobile alert associated with the first SIM. Forexample, referring to FIG. 4, at 420, the UE obtains, based on thedetermination that the first mobile alert is scheduled for broadcast, anFCFS lock grant indication of receiver resources assigned for receivingthe first mobile alert associated with the first SIM 404. At 906, the UEdetermines that a second mobile alert associated with a second SIM isscheduled for broadcast from a second network. For example, referring toFIG. 4, at 426, 428 the UE determines that a second mobile alertassociated with a second SIM 408 is scheduled for broadcast from asecond network 410. At 908, the UE refrains, based at least in part onthe indication, from receiving the second mobile alert associated withthe second SIM. For example, referring to FIG. 4, at 430, the UErefrains, based at least in part on the FCFS lock grant indication at420, from receiving the second mobile alert associated with the secondSIM 408. In certain aspects, a UE refraining from receiving a mobilealert associated with a SIM may include the UE declining to decode atleast a portion of a message (e.g., SIB12, SIB1, and the like) from anetwork for that mobile alert.

In one configuration, at 904, the UE obtains the indication of thereceiver resources being assigned for receiving the first mobile alertassociated with the first SIM by locking a TRM module from requestingthe receiver resources for receiving mobile alerts associated with otherSIMS other than the first SIM. For example, referring to FIG. 4, at 420,the UE obtains the FCFS lock grant indication of the receiver resourcesbeing assigned for receiving the first mobile alert associated with thefirst SIM where a TRM module is locked/prevented from requesting thereceiver resources for receiving mobile alerts associated with otherSIMs other than the first SIM.

In one configuration, the first mobile alert and the second mobile alertare associated with messages from at least one of a CMAS or an ETWS.

In one configuration, the UE (e.g., 1402, modem 1404 of FIG. 14) sendsthe first mobile alert to an AP (e.g., see the AP 1406 of FIG. 14) forsignaling the first mobile alert to a user of the UE.

In one configuration, after 908, one or more blocks in A are performedwith respect to FIG. 10. In another configuration, after 908, one ormore blocks in B are performed with respect to FIG. 11.

FIG. 10 is a second flowchart 1000 of the first method of wirelesscommunication. The flowchart 1000 is associated with the FCFSconfiguration/approach. The method may be performed by a UE (e.g., theUE 104; the apparatus 1402). At 1010, the UE determines that a thirdmobile alert associated with the first SIM is scheduled for broadcastfrom the first network. For example, referring to FIG. 4, at 442, thefirst SIM 404 receives the FCFS lock when the UE determines that a thirdmobile alert associated with the first SIM 404 is scheduled forbroadcast from the first network 402. At 1012, the UE obtains, based onthe determination that the third mobile alert is scheduled forbroadcast, a third indication that the receiver resources are assignedfor receiving the third mobile alert associated with the first SIM. Forexample, referring to FIG. 4, at 446, the UE obtains, based on thedetermination that the third mobile alert is scheduled for broadcast, athird FCFS lock grant indication that the receiver resources areassigned for receiving the third mobile alert associated with the firstSIM 404. At 1014, the UE determines that the third mobile alert and thefirst mobile alert have the same message ID. For example, referring toFIG. 4, at 448, the UE determines that the third mobile alert and thefirst mobile alert have a same message ID. At 1016, the UE stops areception of the third mobile alert based on the determination that thethird mobile alert and the first mobile alert have the same message ID.For example, referring to FIG. 4, at 450, the UE stops a reception ofthe third mobile alert based on the determination that the third mobilealert and the first mobile alert have the same message ID. At 1018, theUE obtains a fourth indication that the receiver resources areunassigned for receiving the third mobile alert associated with thefirst SIM. For example, referring to FIG. 4, at 452, the UE obtains afourth indication that the receiver resources are unassigned forreceiving the third mobile alert associated with the first SIM 404,where the fourth indication indicates that the FCFS lock is released ortransferred.

FIG. 11 is a third flowchart 1100 of the first method of wirelesscommunication. The flowchart 1100 is associated with the AP triggerconfiguration/approach. The method may be performed by a UE (e.g., theUE 104; the apparatus 1602). At 1110, the UE obtains, upon completion ofthe receiving the first mobile alert, a second indication that thereceiver resources are unassigned for receiving mobile alerts associatedwith the first SIM. For example, referring to FIG. 6, at 636, the UEobtains, upon completion of the receiving the first mobile alert at 632,a second indication that the receiver resources are unassigned forreceiving mobile alerts associated with the first SIM 604. The UE mayobtain the second indication of the receiver resources being unassignedfor receiving the first mobile alert associated with the first SIM byunlocking a TRM module from being unable to request the receiverresources for receiving mobile alerts associated with other SIMs otherthan the first SIM. At 1112, the UE determines that a third mobile alertassociated with the second SIM is scheduled for broadcast from thesecond network. For example, referring to FIG. 6, at 626, 628 the UEdetermines that one or more mobile alerts including a third mobile alertassociated with the second SIM 608 is scheduled for broadcast from thesecond network 610. At 630, the UE ignores decoding mobile alertsegments, but upon the release of the FCFS lock at 636, determines thatat least one additional mobile alert (i.e., the third mobile alert) isscheduled for broadcast from the second network 610. At 1114, the UEreceives a trigger for increasing the priority from an AP. For example,referring to FIG. 6, at 638, the UE receives a trigger for increasingthe priority from an AP 690 (see also 1606 of FIG. 14). At 1116, the UEincreases, based at least in part on the second indication, a priorityof securing the receiver resources for receiving the third mobile alert.For example, referring to FIG. 6, at 640, the UE increases, based atleast in part on the second indication, a priority of securing thereceiver resources for receiving the third mobile alert. At 1118, the UEobtains, based on the increased priority for securing the receiverresources for receiving the third mobile alert, a third indication ofthe receiver resources being assigned for receiving the third mobilealert associated with the second SIM. For example, referring to FIG. 6,at 640, the UE obtains, based on the increased priority for securing thereceiver resources for receiving the third mobile alert, a thirdindication of the receiver resources being assigned for receiving thethird mobile alert associated with the second SIM. At 1120, the UEreceives the third mobile alert through the receiver resources. Forexample, referring to FIG. 6, at 642, the UE receives the third mobilealert through the receiver resources.

FIG. 12 is a flowchart 1200 of a second method of wirelesscommunication. The flowchart 1200 is associated with FCFS approach whilethe UE is operating in SR-DSDS page sharing mode. The method may beperformed by a UE (e.g., the UE 104; the apparatus 1602). At 1202, theUE determines that a first mobile alert associated with a first SIM anda second SIM is scheduled for broadcast from a network. For example,referring to FIG. 5, at 514, 516, the UE determines that a first mobilealert associated with a first SIM 504 and a second SIM 508 is scheduledfor broadcast from a network 502. At 1204, the UE in association withthe first SIM, receives one or more message segments associated with themobile alert. For example, referring to FIG. 5, at 522, the UE inassociation with the first subscription 504 receives the one or moremessage segments associated with the mobile alert. At 1206, the UE inassociation with the first SIM, decodes the one or more message segmentsassociated with the mobile alert. For example, referring to FIG. 5, at522, the UE in association with the first subscription decodes thereceived CMAS segments. At 1208, the UE in association with the firstSIM, based on the one or more decoded message segments, transmits adecoded message to the UE in association with the second SIM. Forexample, referring to FIG. 5, at 528, the UE in association with thefirst subscription transmits the decoded message to the UE inassociation with the second subscription.

In one configuration, the UE (e.g., 1402, modem 1404 of FIG. 16) inassociation with the first SIM, transmitting the decoded message to anapplication processor (AP) (e.g., AP 1606 of FIG. 16) for signaling themobile alert to a user of the UE.

In one configuration, the UE in association with the first SIM,transmits a set of message identifiers associated with the one or moredecoded message segments to the UE in association with the second SIM.

In one configuration, the UE (e.g., 1602, modem 1604 of FIG. 16) inassociation with the second SIM, transmits, based on the received set ofmessage identifiers, the decoded message to the application processorfor signaling the mobile alert to a user of the UE.

In one configuration, the UE (e.g., 1602, modem 1604 of FIG. 16) inassociation with the second SIM, determine whether the received set ofmessage identifiers is associated with the second SIM, and in responseto determining that the received set of message identifiers isassociated with the second SIM, transmitting, by the UE in associationwith the second SIM, the decoded message to the AP (e.g., AP 1606 ofFIG. 16).

In one configuration, the UE (e.g., 1602 of FIG. 16) is operating in apage sharing mode.

In one configuration, the UE (e.g., 1602 of FIG. 16) in association withthe first SIM obtains, based on the determination that the mobile alertsis scheduled for broadcast, an indication of receiver resources assignedfor receiving the one or more mobile alerts. In one configuration, theUE (e.g., 1602 of FIG. 16) in association with the first SIM obtains theindicating of receiver resources assigned for receiving the one or moremobile alerts by locking a transceiver resource management (TRM) modulefrom requesting resources for receiving mobile alerts. For example,referring to FIG. 5, at 520, the UE in association with the first SIM,may obtain an FCFS lock grant indication of receiver resources assignedfor receiving the one or more mobile alerts based on the determinationthat the mobile alerts are scheduled for broadcast.

In one configuration, the mobile alert is associated with messages fromat least one of a commercial mobile alert system (CMAS) or an earthquakeand tsunami warning system (ETWS). In one configuration, the one or moremessage segments are associated with one or more messages from at leastone of a CMAS or an ETWS.

FIG. 13 is a flowchart 1300 of a third method of wireless communication.The flowchart 1300 is associated with the AP triggerconfiguration/approach. The method may be performed by a UE (e.g., theUE 104; the apparatus 1402). At 1302, the UE receives a mobile alertfrom a first SIM. At 1304, the UE sends a trigger to a second SIM toincrease a priority for obtaining receiver resources for receivingmobile alerts associated with the second SIM. For example, referring toFIG. 6, at 634, the AP 690 at the UE receives a mobile alert from afirst SIM 604. In addition, at 638, the AP 690 at the UE sends a triggerto a second SIM 608 to increase a priority for obtaining receiverresources for receiving mobile alerts associated with the second SIM608.

FIG. 14 is a flowchart 1400 of a fourth method of wirelesscommunication. The flowchart 1400 is associated with the messagestitching configuration/approach. The method may be performed by a UE(e.g., the UE 104; the apparatus 1402). At 1402, a UE receives at leasta first portion of a first mobile alert associated with a first SIM. Thefirst mobile alert is received from a first network. For example,referring to FIG. 7, at 722, a UE receives at least a first portion of afirst mobile alert associated with a first SIM 704. The first mobilealert is received from a first network 702. At 1410, the UE receives atleast a second portion of a second mobile alert associated with a secondSIM. The second mobile alert is received from a second network. Forexample, referring to FIG. 7, at 742, the UE receives at least a secondportion of a second mobile alert associated with a second SIM 708. At1412, the UE determines that a first identifier of the first mobilealert and a second identifier of the second mobile alert are the same.At 1414, the UE combines, based on at least in part on the determinationthat the first identifier of the first mobile alert and the secondidentifier of the second mobile alert are the same, the at least thefirst portion of the first mobile alert and the at least the secondportion of the second mobile alert. For example, referring to FIG. 7, at742, the UE determines that a first identifier of the first mobile alertand a second identifier of the second mobile alert are the same, andthen at 770, UE combines, based on at least in part on the determinationthat the first identifier of the first mobile alert and the secondidentifier of the second mobile alert are the same, the at least thefirst portion of the first mobile alert and the at least the secondportion of the second mobile alert.

In one configuration, at 1408, the UE stops the receiving of the firstmobile alert before the first mobile alert is received completely inorder to receive the second mobile alert. For example, referring to FIG.7, UE stops the receiving of the first mobile alert at 722 before thefirst mobile alert is received completely in order to receive the secondmobile alert at 742.

In one configuration, at 1404, the UE determines, while receiving the atleast the first portion of the first mobile alert, that the secondmobile alert associated with the second SIM is scheduled for broadcast.For example, referring to FIG. 7, at 726, 728, the UE determines, whilereceiving the at least the first portion of the first mobile alert, thatthe second mobile alert associated with the second SIM 708 is scheduledfor broadcast. In addition, at 1406, the UE sets a priority of receivingthe second mobile alert to a priority higher than a priority forreceiving the first mobile alert. For example, as discussed supra inrelation to 742, the UE may set a priority of receiving the secondmobile alert to a priority higher than a priority for receiving thefirst mobile alert. In such a configuration, at 1408, the UE stops thereceiving the first mobile alert based on the second mobile alert havinga higher priority than the first mobile alert. For example, referring toFIG. 7, the UE stops receiving the first mobile alert at 722 based onthe second mobile alert having a higher priority than the first mobilealert.

In one configuration, the UE (e.g., 1602, modem 1604 of FIG. 16) sendsthe first mobile alert to an application AP (e.g., 1606 of FIG. 16) forsignaling the first mobile alert to a user of the UE.

FIG. 15 is a flowchart 1500 of a fifth method of wireless communication.The flowchart 1500 is associated with the SSIM configuration/approach.The method may be performed by a UE (e.g., the UE 104; the apparatus1402). At 1502, the UE determines that a first mobile alert associatedwith a first non-default SIM is scheduled for broadcast from a first NRnetwork. For example, referring to FIG. 8, 826, 828, the UE determinesthat a first mobile alert associated with a first non-default SIM 808 isscheduled for broadcast from a first NR network 810. At 1504, the UEdetermines whether a second default SIM associated with a second NRnetwork is in service or out of service. At 1508, when the seconddefault SIM is out of service, the UE receives the first mobile alertassociated with the first non-default SIM based at least in part on thedetermination that the second default SIM is out of service. Forexample, as discussed supra in relation to FIG. 8, the UE determineswhether a second default SIM 804 associated with a second NR network 802is in service or out of service, and when the second default SIM 804 isout of service, the UE receives the first mobile alert associated withthe first non-default SIM 808 based at least in part on thedetermination that the second default SIM 804 is out of service.

In one configuration, at 1506, when the second default SIM is inservice, the UE refrains from receiving the first mobile alertassociated with the first non-default SIM based at least in part on thedetermination that the second default SIM is in service. For example,referring to FIG. 8, when the second default SIM 804 is in service, at830, the UE refrains from receiving the first mobile alert associatedwith the first non-default SIM 808 based at least in part on thedetermination that the second default SIM 804 is in service.

In one configuration, after 1508 at 1510, the UE determines, whilereceiving the first mobile alert, that the second default SIM is inservice. In addition, at 1512, the UE completes receiving the firstmobile alert. Further, at 1514, the UE monitors for additional mobilealerts associated with the second default SIM upon completion of thereceiving of the first mobile alert.

In one configuration, the UE (e.g., 1602, modem 1604 of FIG. 16) sendsthe first mobile alert to an AP (e.g., 1606 of FIG. 16) for signalingthe first mobile alert to a user of the UE.

FIG. 16 is a diagram 1600 illustrating an example of a hardwareimplementation for an apparatus 1602. The apparatus 1602 is a UE andincludes a cellular baseband processor 1604 (also referred to as amodem) coupled to a cellular RF transceiver 1622 and one or moresubscriber identity modules (SIM) cards 1620, an application processor1606 coupled to a secure digital (SD) card 1608 and a screen 1610, aBluetooth module 1612, a wireless local area network (WLAN) module 1614,a Global Positioning System (GPS) module 1616, and a power supply 1618.The cellular baseband processor 1604 communicates through the cellularRF transceiver 1622 with the UE 104 and/or BS 102/180. The cellularbaseband processor 1604 may include a computer-readable medium/memory.The cellular baseband processor 1604 is responsible for generalprocessing, including the execution of software stored on thecomputer-readable medium/memory. The software, when executed by thecellular baseband processor 1604, causes the cellular baseband processor1604 to perform the various functions described supra. Thecomputer-readable medium/memory may also be used for storing data thatis manipulated by the cellular baseband processor 1604 when executingsoftware. The cellular baseband processor 1604 further includes areception component 1630, a communication manager 1632, and atransmission component 1634. The communication manager 1632 includes theone or more illustrated components. The components within thecommunication manager 1632 may be stored in the computer-readablemedium/memory and/or configured as hardware within the cellular basebandprocessor 1604. The cellular baseband processor 1604 may be a componentof the UE 350 and may include the memory 360 and/or at least one of theTX processor 368, the RX processor 356, and the controller/processor359. In one configuration, the apparatus 1602 may be a modem chip andinclude just the baseband processor 1604, and in another configuration,the apparatus 1602 may be the entire UE (e.g., see 350 of FIG. 3) andinclude the aforediscussed additional modules of the apparatus 1602.

In a first configuration, the communication manager 1632 includes analert/warning message protection in MSIM component 1640 that isconfigured to obtain, based on a first mobile alert associated with afirst subscriber identity module (SIM) being scheduled for broadcastfrom a first network, an indication of receiver resources assigned forreceiving the first mobile alert associated with the first SIM. Inaddition, the component 1640 is configured to refrain, based at least inpart on the indication, from receiving a second mobile alert associatedwith a second SIM scheduled from a second network.

In one configuration, the component 1640 is configured to obtain theindication of the receiver resources being assigned for receiving thefirst mobile alert associated with the first SIM by locking a TRM modulefrom requesting the receiver resources for receiving mobile alertsassociated with other SIMS other than the first SIM. In oneconfiguration, the first mobile alert and the second mobile alert areassociated with messages from at least one of a CMAS or an ETWS. In oneconfiguration, the component 1640 is configured to obtain, uponcompletion of the receiving the first mobile alert, a second indicationthat the receiver resources are unassigned for receiving mobile alertsassociated with the first SIM. In one configuration, the component 1640is configured to obtain the second indication of the receiver resourcesbeing unassigned for receiving the first mobile alert associated withthe first SIM by unlocking a TRM module from being unable to request thereceiver resources for receiving mobile alerts associated with otherSIMS other than the first SIM. In one configuration, the component 1640is further configured to determine that a third mobile alert associatedwith the second SIM is scheduled for broadcast from the second network.In addition, the component 1640 is configured to increase, based atleast in part on the second indication, a priority of securing thereceiver resources for receiving the third mobile alert. In addition,the component 1640 is configured to obtain, based on the increasedpriority for securing the receiver resources for receiving the thirdmobile alert, a third indication of the receiver resources beingassigned for receiving the third mobile alert associated with the secondSIM. Further, the component 1640 is configured to receive the thirdmobile alert through the receiver resources. In one configuration, thecomponent 1640 is configured to receive a trigger for increasing thepriority from an AP 1606, wherein the priority is increased based on thereceived trigger. In one configuration, the component 1640 is configuredto determine that a third mobile alert associated with the first SIM isscheduled for broadcast from the first network, and to obtain, based onthe determination that the third mobile alert is scheduled forbroadcast, a third indication that the receiver resources are assignedfor receiving the third mobile alert associated with the first SIM. Inone configuration, the component 1640 is configured to determine thatthe third mobile alert and the first mobile alert have a same messageID, to stop a reception of the third mobile alert based on thedetermination that the third mobile alert and the first mobile alerthave the same message ID, and to obtain a fourth indication that thereceiver resources are unassigned for receiving the third mobile alertassociated with the first SIM. In one configuration, the component 1640is configured to send the first mobile alert to an AP 1606 for signalingthe first mobile alert to a user (e.g., through the screen/display 1610)of the UE 1602.

In a second configuration, the AP 1606 is configured to receive a mobilealert from a first SIM at 1604, and to send a trigger to a second SIM at1604 to increase a priority for obtaining receiver resources forreceiving mobile alerts associated with the second SIM at 1604.

In a third configuration, the communication manager 1632 includes analert/warning message protection in MSIM component 1640 that isconfigured to receive at least a first portion of a first mobile alertassociated with a first SIM. The first mobile alert is received from afirst network. In addition, the component 1640 is configured to receiveat least a second portion of a second mobile alert associated with asecond SIM. The second mobile alert is received from a second network.In addition, the component 1640 is configured to determine that a firstidentifier of the first mobile alert and a second identifier of thesecond mobile alert are the same. Further, the component 1640 isconfigured to combine, based on at least in part on the determinationthat the first identifier of the first mobile alert and the secondidentifier of the second mobile alert are the same, the at least thefirst portion of the first mobile alert and the at least the secondportion of the second mobile alert.

In one configuration, the component 1640 is configured to stop thereceiving of the first mobile alert before the first mobile alert isreceived completely in order to receive the second mobile alert. On oneconfiguration, the component 1640 is configured to determine, whilereceiving the at least the first portion of the first mobile alert, thatthe second mobile alert associated with the second SIM is scheduled forbroadcast. In addition, the component 1640 is configured to set apriority of receiving the second mobile alert to a priority higher thana priority for receiving the first mobile alert. The component 1640 isconfigured to stop receiving the first mobile alert based on the secondmobile alert having a higher priority than the first mobile alert. Inone configuration, the component 1640 is configured to send the firstmobile alert to an AP 1606 for signaling the first mobile alert to auser (e.g., through the screen/display 1610) of the UE.

In a fourth configuration, the communication manager 1632 includes analert/warning message protection in MSIM component 1640 that isconfigured to determine that a first mobile alert associated with afirst non-default SIM is scheduled for broadcast from a first NRnetwork, to determine whether a second default SIM associated with asecond NR network is in service or out of service, and to receive thefirst mobile alert associated with the first non-default SIM based atleast in part on the determination that the second default SIM is out ofservice.

In one configuration, the component 1640 is configured to refrain fromreceiving the first mobile alert associated with the first non-defaultSIM based at least in part on the determination that the second defaultSIM is in service. In one configuration, the component 1640 isconfigured to determine, while receiving the first mobile alert, thatthe second default SIM is in service. In addition, the component 1640 isconfigured to complete the receiving of the first mobile alert. Further,the component 1640 is configured to monitor for additional mobile alertsassociated with the second default SIM upon completion of the receivingof the first mobile alert. In one configuration, the component 1640 isconfigured to send the first mobile alert to an AP 1606 for signalingthe first mobile alert to a user (e.g., through the screen/display 1610)of the UE.

In a fifth configuration, the communication manager 1632 includes analert/warning message protection in MSIM component 1640 that isconfigured to receive, in association with the first SIM, one or moremessage segments associated with the mobile alert. In addition, thecomponent 1640, is configured to decode, in association with the firstSIM, the one or more segments associated with the mobile alert. Inaddition, the component 1640, is configured to transmit, in associationwith the first SIM, based on the one or more decoded message segments, adecoded message to the UE in association with a second SIM.

In one configuration, the component 1640 is configured to transmit, inassociation with the first SIM, the decoded message to an applicationprocessor (AP) for signaling the mobile alert to a user of the UE. Inone configuration, the component 1640 is configured to transmit, inassociation with the first SIM, a set of message identifiers associatedwith the one or more decoded message segments to the UE in associationwith the second SIM. In one configuration, the component 1640 isconfigured to transmit, in association with the second SIM, based on thereceived set of message identifiers, the decoded message to theapplication processor (AP) for signaling the mobile alert to a user ofthe UE.

In one configuration, the component 1640 is configured to transmit thedecoded message to the AP by determining, in association with the secondSIM, whether the received set of message identifiers is associated withthe second SIM, and in response to determining that the received set ofmessage identifiers is associated with the second SIM, transmitting, inassociation with the second SIM, the decoded message to the AP. In oneconfiguration, the component 1640 is configured to operate in a pagesharing mode. In one configuration, the component 1640 is configured toobtain, in association with the first SIM, based on the determinationthat the mobile alerts is scheduled for broadcast, an indication ofreceiver resources assigned for receiving the one or more mobile alerts.In one configuration, the component 1640 is configured to obtain theindication of the receiver resources being assigned for receiving themobile alert associated with the first SIM and/or the second SIM bylocking a transceiver resource management (TRM) module from requestingthe receiver resources for receiving mobile alerts.

In one configuration, the mobile alert is associated with messages fromat least one of a commercial mobile alert system (CMAS) or an earthquakeand tsunami warning system (ETWS). In one configuration, the one or moremessage segments are associated with one or more messages from at leastone of a commercial mobile alert system (CMAS) or an earthquake andtsunami warning system (ETWS). In one configuration, the component 1640is configured to determine that the mobile alert associated with atleast the first SIM and/or the second SIM is scheduled for broadcastfrom a network. In one configuration, the mobile alert is associatedwith at least the first SIM and the second SIM.

The apparatus may include additional components that perform each of theblocks of the algorithm in the aforementioned flowcharts of FIGS. 9-15.As such, each block in the aforementioned flowcharts of FIGS. 9-15 maybe performed by a component and the apparatus may include one or more ofthose components. The components may be one or more hardware componentsspecifically configured to carry out the stated processes/algorithm,implemented by a processor configured to perform the statedprocesses/algorithm, stored within a computer-readable medium forimplementation by a processor, or some combination thereof.

In one configuration, the apparatus 1602, and in particular the cellularbaseband processor (modem) 1604, includes means for obtaining, based ona first mobile alert associated with a first subscriber identity module(SIM) being scheduled for broadcast from a first network, an indicationof receiver resources assigned for receiving the first mobile alertassociated with the first SIM. In addition, the apparatus 1602/modem1604 means for refraining, based at least in part on the indication,from receiving a second mobile alert associated with a second SIMscheduled for broadcast from a second network. In one configuration, theapparatus 1602/modem 1604 may further include means for obtaining theindication of the receiver resources being assigned for receiving thefirst mobile alert associated with the first SIM is configured to lock aTRM module from requesting the receiver resources for receiving mobilealerts associated with other SIMs other than the first SIM. In oneconfiguration, the first mobile alert and the second mobile alert areassociated with messages from at least one of a CMAS or an ETWS. In oneconfiguration, the apparatus 1602/modem 1604 may further include meansfor obtaining, upon completion of the receiving the first mobile alert,a second indication that the receiver resources are unassigned forreceiving mobile alerts associated with the first SIM. In oneconfiguration, the apparatus 1602/modem 1604 may further include meansfor obtaining the second indication of the receiver resources beingunassigned for receiving the first mobile alert associated with thefirst SIM is configured to unlock a TRM module from being unable torequest the receiver resources for receiving mobile alerts associatedwith other SIMS other than the first SIM. In one configuration, theapparatus 1602/modem 1604 may further include means for determining thata third mobile alert associated with the second SIM is scheduled forbroadcast from the second network. In such a configuration, theapparatus 1602/modem 1604 may further include means for increasing,based at least in part on the second indication, a priority of securingthe receiver resources for receiving the third mobile alert. In such aconfiguration, the apparatus 1602/modem 1604 may further include meansfor obtaining, based on the increased priority for securing the receiverresources for receiving the third mobile alert, a third indication ofthe receiver resources being assigned for receiving the third mobilealert associated with the second SIM. In such a configuration, theapparatus 1602/modem 1604 may further include means for receiving thethird mobile alert through the receiver resources. In one configuration,the apparatus 1602/modem 1604 may further include means for receiving atrigger for increasing the priority from an AP 1606. The priority may beincreased based on the received trigger. In one configuration, theapparatus 1602/modem 1604 may further include means for determining thata third mobile alert associated with the first SIM is scheduled forbroadcast from the first network, and means for obtaining, based on thedetermination that the third mobile alert is scheduled for broadcast, athird indication that the receiver resources are assigned for receivingthe third mobile alert associated with the first SIM. In oneconfiguration, the apparatus 1602/modem 1604 may further include meansfor determining that the third mobile alert and the first mobile alerthave a same message ID, means for stopping a reception of the thirdmobile alert based on the determination that the third mobile alert andthe first mobile alert have the same message ID, and means for obtaininga fourth indication that the receiver resources are unassigned forreceiving the third mobile alert associated with the first SIM. In oneconfiguration, the apparatus 1602/modem 1604 may further include meansfor sending the first mobile alert to an AP 1606 for signaling the firstmobile alert to a user of the UE. In one configuration, the apparatus1602/modem 1604 may further include means for determining that the firstmobile alert associated with the first SIM is scheduled for broadcastfrom the first network. In one configuration, the apparatus 1602/modem1604 may further include means for determining that the second mobilealert associated with the second SIM is scheduled for broadcast from thesecond network.

In one configuration, the apparatus 1602, and in particular the AP 1606,includes means for receiving a mobile alert from a first SIM, and meansfor sending a trigger to a second SIM to increase a priority forobtaining receiver resources for receiving mobile alerts associated withthe second SIM.

In one configuration, the apparatus 1602, and in particular the cellularbaseband processor (modem) 1604, includes means for receiving at least afirst portion of a first mobile alert associated with a first SIM. Thefirst mobile alert is received from a first network. The apparatus1602/modem 1604 further includes means for receiving at least a secondportion of a second mobile alert associated with a second SIM. Thesecond mobile alert is received from a second network. The apparatus1602/modem 1604 further includes means for determining that a firstidentifier of the first mobile alert and a second identifier of thesecond mobile alert are the same. The apparatus 1602/modem 1604 furtherincludes means for combining, based on at least in part on thedetermination that the first identifier of the first mobile alert andthe second identifier of the second mobile alert are the same, the atleast the first portion of the first mobile alert and the at least thesecond portion of the second mobile alert. In one configuration, theapparatus 1602/modem 1604 further includes means for stopping thereceiving of the first mobile alert before the first mobile alert isreceived completely in order to receive the second mobile alert. In oneconfiguration, the apparatus 1602/modem 1604 further includes means fordetermining, while receiving the at least the first portion of the firstmobile alert, that the second mobile alert associated with the secondSIM is scheduled for broadcast. In such a configuration, the apparatus1602/modem 1604 further includes means for setting a priority ofreceiving the second mobile alert to a priority higher than a priorityfor receiving the first mobile alert. The means for stopping thereceiving of the first mobile alert is based on the second mobile alerthaving a higher priority than the first mobile alert. In oneconfiguration, the apparatus 1602/modem 1604 further includes means forsending the first mobile alert to an AP 1606 for signaling the firstmobile alert to a user of the UE.

In one configuration, the apparatus 1602, and in particular the cellularbaseband processor (modem) 1604, includes means for determining that afirst mobile alert associated with a first non-default SIM is scheduledfor broadcast from a first NR network, means for determining whether asecond default SIM associated with a second NR network is in service orout of service, and means for receiving the first mobile alertassociated with the first non-default SIM based at least in part on thedetermination that the second default SIM is out of service. In oneconfiguration, the apparatus 1602/modem 1604 further includes means forrefraining from receiving the first mobile alert associated with thefirst non-default SIM based at least in part on the determination thatthe second default SIM is in service. In one configuration, theapparatus 1602/modem 1604 further includes means for determining, whilereceiving the first mobile alert, that the second default SIM is inservice, means for completing the receiving of the first mobile alert,and means for monitoring for additional mobile alerts associated withthe second default SIM upon completion of the receiving of the firstmobile alert. In one configuration, the apparatus 1602/modem 1604further includes means for sending the first mobile alert to an AP 1606for signaling the first mobile alert to a user of the UE.

In one configuration, the apparatus 1602, and in particular the cellularbaseband processor (modem) 1604, includes means for receiving, inassociation with a first SIM, one or more message segments associatedwith a mobile alert. In addition, the apparatus 1602/modem 1604 furtherincludes means for decoding, by the UE in association with the firstSIM, the one or more message segments associated with the mobile alert.In addition, the apparatus 1602/modem 1604 further includes means fortransmitting, by the UE in association with the first SIM, based on theone or more decoded message segments, a decoded message to the UE inassociation with a second SIM. In one configuration, the apparatus1602/modem 1604 may further include means for transmitting, by the UE inassociation with the first SIM, the decoded message to an applicationprocessor (AP) for signaling the mobile alert to a user of the UE. Inone configuration, the apparatus 1602/modem 1604 may further includemeans for transmitting, by the UE in association with the first SIM, aset of message identifiers associated with the one or more decodedmessage segments to the UE in association with the second SIM. In oneconfiguration, the apparatus 1602/modem 1604 may further include meansfor transmitting, by the UE in association with the second SIM, based onthe received set of message identifiers, the decoded message to theapplication processor (AP) for signaling the mobile alert to a user ofthe UE. In one configuration, the apparatus 1602/modem 1604 may furtherinclude means for transmitting the decoded message to the applicationprocessor (AP) is configured to determine, by the UE in association withthe second SIM, whether the received set of message identifiers isassociated with the second SIM, and transmit, by the UE in associationwith the second SIM, the decoded message to the AP, in response todetermining that the received set of message identifiers is associatedwith the second SIM. In one configuration, the apparatus 1602/modem 1604may be configured to operate in a page sharing mode. In oneconfiguration, the apparatus 1602/modem 1604 may further include meansfor obtaining, by the UE in association with the first SIM, based on thedetermination that the mobile alerts is scheduled for broadcast, anindication of receiver resources assigned for receiving the one or moremobile alerts. In one configuration, the apparatus 1602/modem 1604 mayfurther include means for obtaining the indication of the receiverresources being assigned for receiving the mobile alert associated withthe first SIM and the second SIM is configured to lock, by the UE inassociation with the firs SIM, a transceiver resource management (TRM)module from requesting the receiver resources for receiving mobilealerts. In one configuration, the mobile alert is associated withmessages from at least one of a commercial mobile alert system (CMAS) oran earthquake and tsunami warning system (ETWS). In one configuration,the one or more message segments are associated with one or moremessages from at least one of a commercial mobile alert system (CMAS) oran earthquake and tsunami warning system (ETWS). In one configuration,the apparatus 1602/modem 1604 may further include means for determiningthat a mobile alert associated with at least the first SIM and/or thesecond SIM is scheduled for broadcast from the network. In oneconfiguration, the mobile alert is associated with at least the firstSIM and the second SIM.

The aforementioned means may be one or more of the aforementionedcomponents of the apparatus 1602 configured to perform the functionsrecited by the aforementioned means. As described supra, the apparatus1602 may include the TX Processor 368, the RX Processor 356, and thecontroller/processor 359. As such, in one configuration, theaforementioned means may be the TX Processor 368, the RX Processor 356,and the controller/processor 359 configured to perform the functionsrecited by the aforementioned means.

As discussed supra, under some circumstances, a UE with SR-DSDS behaviormay lose alert/warning messages associated with multiple different SIMS.In order to prevent the loss of alert/warning messages, differentconfigurations/approaches for alert/warning message protection in MSIMare provided. The configurations/approaches include an FCFSconfiguration/approach, an AP trigger configuration/approach, a messagestitching configuration/approach, and an SSIM configuration/approach.When the UE is receiving alert/warning messages from multiple SIMS, theprovided configurations/approaches help prevent the UE from losing thealert/warning messages from at least one of the multiple SIMS, and insome situations, help prevent the UE from losing the alert/warningmessages from each of the multiple SIMS.

It is understood that the specific order or hierarchy of blocks in theprocesses/flowcharts disclosed is an illustration of example approaches.Based upon design preferences, it is understood that the specific orderor hierarchy of blocks in the processes/flowcharts may be rearranged.Further, some blocks may be combined or omitted. The accompanying methodclaims present elements of the various blocks in a sample order, and arenot meant to be limited to the specific order or hierarchy presented.

The previous description is provided to enable any person skilled in theart to practice the various aspects described herein. Variousmodifications to these aspects will be readily apparent to those skilledin the art, and the generic principles defined herein may be applied toother aspects. Thus, the claims are not intended to be limited to theaspects shown herein, but is to be accorded the full scope consistentwith the language claims, wherein reference to an element in thesingular is not intended to mean “one and only one” unless specificallyso stated, but rather “one or more.” Terms such as “if” “when,” and“while” should be interpreted to mean “under the condition that” ratherthan imply an immediate temporal relationship or reaction. That is,these phrases, e.g., “when,” do not imply an immediate action inresponse to or during the occurrence of an action, but simply imply thatif a condition is met then an action will occur, but without requiring aspecific or immediate time constraint for the action to occur. The word“exemplary” is used herein to mean “serving as an example, instance, orillustration.” Any aspect described herein as “exemplary” is notnecessarily to be construed as preferred or advantageous over otheraspects. Unless specifically stated otherwise, the term “some” refers toone or more. Combinations such as “at least one of A, B, or C,” “one ormore of A, B, or C,” “at least one of A, B, and C,” “one or more of A,B, and C,” and “A, B, C, or any combination thereof” include anycombination of A, B, and/or C, and may include multiples of A, multiplesof B, or multiples of C. Specifically, combinations such as “at leastone of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B,and C,” “one or more of A, B, and C,” and “A, B, C, or any combinationthereof” may be A only, B only, C only, A and B, A and C, B and C, or Aand B and C, where any such combinations may contain one or more memberor members of A, B, or C. All structural and functional equivalents tothe elements of the various aspects described throughout this disclosurethat are known or later come to be known to those of ordinary skill inthe art are expressly incorporated herein by reference and are intendedto be encompassed by the claims. Moreover, nothing disclosed herein isintended to be dedicated to the public regardless of whether suchdisclosure is explicitly recited in the claims. The words “module,”“mechanism,” “element,” “device,” and the like may not be a substitutefor the word “means.” As such, no claim element is to be construed as ameans plus function unless the element is expressly recited using thephrase “means for.”

What is claimed is:
 1. A method of wireless communication of a userequipment (UE), comprising: obtaining, based on a first mobile alertassociated with a first subscriber identity module (SIM) being scheduledfor broadcast from a first network, an indication of receiver resourcesassigned for receiving the first mobile alert associated with the firstSIM; and refraining, based at least in part on the indication, fromreceiving a second mobile alert associated with a second SIM scheduledfor broadcast from a second network.
 2. The method of claim 1, whereinthe obtaining the indication of the receiver resources being assignedfor receiving the first mobile alert associated with the first SIMcomprises locking a transceiver resource management (TRM) module fromrequesting the receiver resources for receiving mobile alerts associatedwith other SIMs other than the first SIM.
 3. The method of claim 1,further comprising: determining that the first mobile alert associatedwith the first SIM is scheduled for broadcast from the network; anddetermining that the second mobile alert associated with the second SIMis scheduled for broadcast from the second network.
 4. The method ofclaim 1, further comprising obtaining, upon completion of the receivingthe first mobile alert, a second indication that the receiver resourcesare unassigned for receiving mobile alerts associated with the firstSIM.
 5. The method of claim 4, wherein the obtaining the secondindication of the receiver resources being unassigned for receiving thefirst mobile alert associated with the first SIM comprises unlocking atransceiver resource management (TRM) module from being unable torequest the receiver resources for receiving mobile alerts associatedwith other SIMS other than the first SIM.
 6. The method of claim 4,further comprising: determining that a third mobile alert associatedwith the second SIM is scheduled for broadcast from the second network;increasing, based at least in part on the second indication, a priorityof securing the receiver resources for receiving the third mobile alert;obtaining, based on the increased priority for securing the receiverresources for receiving the third mobile alert, a third indication ofthe receiver resources being assigned for receiving the third mobilealert associated with the second SIM; and receiving the third mobilealert through the receiver resources.
 7. The method of claim 6, furthercomprising receiving a trigger for increasing the priority from anapplication processor (AP), wherein the priority is increased based onthe received trigger.
 8. The method of claim 4, further comprising:determining that a third mobile alert associated with the first SIM isscheduled for broadcast from the first network; and obtaining, based onthe determination that the third mobile alert is scheduled forbroadcast, a third indication that the receiver resources are assignedfor receiving the third mobile alert associated with the first SIM. 9.An apparatus for wireless communication, the apparatus being a userequipment (UE), comprising: a memory; and at least one processor coupledto the memory and configured to: obtain, based on a first mobile alertassociated with a first subscriber identity module (SIM) being scheduledfor broadcast from a first network, an indication of receiver resourcesassigned for receiving the first mobile alert associated with the firstSIM; and refrain, based at least in part on the indication, fromreceiving a second mobile alert associated with a second SIM scheduledfrom a second network.
 10. The apparatus of claim 9, wherein to obtainthe indication of the receiver resources being assigned for receivingthe first mobile alert associated with the first SIM, the at least oneprocessor is configured to lock a transceiver resource management (TRM)module from requesting the receiver resources for receiving mobilealerts associated with other SIMS other than the first SIM.
 11. Theapparatus of claim 9, wherein the first mobile alert and the secondmobile alert are associated with messages from at least one of acommercial mobile alert system (CMAS) or an earthquake and tsunamiwarning system (ETWS).
 12. The apparatus of claim 9, wherein the atleast one processor is further configured to obtain, upon completion ofthe receiving the first mobile alert, a second indication that thereceiver resources are unassigned for receiving mobile alerts associatedwith the first SIM.
 13. The apparatus of claim 12, wherein to obtain thesecond indication of the receiver resources being unassigned forreceiving the first mobile alert associated with the first SIM, the atleast one processor is configured to unlock a transceiver resourcemanagement (TRM) module from being unable to request the receiverresources for receiving mobile alerts associated with other SIMs otherthan the first SIM.
 14. The apparatus of claim 12, wherein the at leastone processor is further configured to: determine that a third mobilealert associated with the second SIM is scheduled for broadcast from thesecond network; increase, based at least in part on the secondindication, a priority of securing the receiver resources for receivingthe third mobile alert; obtain, based on the increased priority forsecuring the receiver resources for receiving the third mobile alert, athird indication of the receiver resources being assigned for receivingthe third mobile alert associated with the second SIM; and receive thethird mobile alert through the receiver resources.
 15. The apparatus ofclaim 14, wherein the at least one processor is further configured toreceive a trigger for increasing the priority from an applicationprocessor (AP), wherein the priority is increased based on the receivedtrigger.
 16. The apparatus of claim 12, wherein the at least oneprocessor is further configured to: determine that a third mobile alertassociated with the first SIM is scheduled for broadcast from the firstnetwork; and obtain, based on the determination that the third mobilealert is scheduled for broadcast, a third indication that the receiverresources are assigned for receiving the third mobile alert associatedwith the first SIM.
 17. The apparatus of claim 16, wherein the at leastone processor is further configured to: determine that the third mobilealert and the first mobile alert have a same message identifier (ID);stop a reception of the third mobile alert based on the determinationthat the third mobile alert and the first mobile alert have the samemessage ID; and obtain a fourth indication that the receiver resourcesare unassigned for receiving the third mobile alert associated with thefirst SIM.
 18. A method of wireless communication of a user equipment(UE), comprising: receiving, by the UE in association with a firstsubscriber identity module (SIM), one or more message segmentsassociated with a mobile alert; decoding, by the UE in association withthe first SIM, the one or more message segments associated with themobile alert; and transmitting, by the UE in association with the firstSIM, based on the one or more decoded message segments, a decodedmessage to the UE in association with a second SIM.
 19. The method ofclaim 18, further comprising: transmitting, by the UE in associationwith the first SIM, the decoded message to an application processor (AP)for signaling the mobile alert to a user of the UE.
 20. The method ofclaim 18, further comprising: transmitting, by the UE in associationwith the first SIM, a set of message identifiers associated with the oneor more decoded message segments to the UE in association with thesecond SIM.
 21. The method of claim 20, further comprising:transmitting, by the UE in association with the second SIM, based on thereceived set of message identifiers, the decoded message to anapplication processor (AP) for signaling the mobile alert to a user ofthe UE.
 22. The method of claim 21, wherein transmitting the decodedmessage to the AP further comprises: determining, by the UE inassociation with the second SIM, whether the received set of messageidentifiers is associated with the second SIM; and in response todetermining that the received set of message identifiers is associatedwith the second SIM, transmitting, by the UE in association with thesecond SIM, the decoded message to the AP.
 23. The method of claim 18,wherein the mobile alert is associated with at least the first SIM andthe second SIM.
 24. The method of claim 18, further comprising:obtaining, by the UE in association with the first SIM, based on thedetermination that the mobile alerts is scheduled for broadcast, anindication of receiver resources assigned for receiving the one or moremobile alerts.
 25. An apparatus for wireless communication, theapparatus being a user equipment (UE), comprising: a memory; and atleast one processor coupled to the memory and configured to: receive, bythe UE in association with a first subscriber identity module (SIM), oneor more message segments associated with a mobile alert; decode, by theUE in association with the first SIM, the one or more message segmentsassociated with the mobile alert; and transmit, by the UE in associationwith the first SIM, based on the one or more decoded message segments, adecoded message to the UE in association with a second SIM.
 26. Theapparatus of claim 25, wherein the at least one processor is configuredto: transmit, by the UE in association with the first SIM, the decodedmessage to an application processor (AP) for signaling the mobile alertto a user of the UE.
 27. The apparatus of claim 25, wherein the at leastone processor is configured to: transmit, by the UE in association withthe first SIM, a set of message identifiers associated with the one ormore decoded message segments to the UE in association with the secondSIM.
 28. The apparatus of claim 27, wherein the at least one processoris configured to: transmit, by the UE in association with the secondSIM, based on the received set of message identifiers, the decodedmessage to the application processor (AP) for signaling the mobile alertto a user of the UE.
 29. The apparatus of claim 28, wherein to transmitthe decoded message to the AP, the at least one processor is configuredto: determine, by the UE in association with the second SIM, whether thereceived set of message identifiers is associated with the second SIM;and in response to determining that the received set of messageidentifiers is associated with the second SIM, transmit, by the UE inassociation with the second SIM, the decoded message to the AP.
 30. Theapparatus of claim 25, wherein the mobile alert is associated with atleast the first SIM and a second SIM.